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The invention disclosed a full-automatic water-drill grinding and polishing machine which comprises a fixture, a fixture seat and a mechanical hand. The full-automatic water-drill grinding and polishing machine is characterized in that: the machine includes a left grinding and polishing part and a right grinding and polishing part, wherein the right grinding and polishing part includes a bead loading station, a right grinding station, a right polishing station and a right butting station; the left grinding and polishing part includes a left butting station, a left grinding station, a left polishing station and a bead unloading station; the left butting station and the right butting station are arranged correspondingly; the fixture and the fixture seat are arranged independently; the fixture can act along with the mechanical hand; and the fixture seat is arranged correspondingly to the bead loading mechanism, the grinding mechanism, the polishing mechanism, the left butting mechanism, the right butting mechanism and the bead unloading mechanism. With accurate fixture positioning and high grinding as well as polishing precision, the grinding and polishing machine can realize automatic grinding and polishing of a water drill and can automatically correct processing dimension errors caused by abrasion of abrasive wheels.

A rare-earth-containing ultrahigh strength collapse-resistant petroleum casing and a production method thereof belong to the technical fields of ferrous metal smelting and metal press working. The petroleum casing comprises the following raw materials by weight percent: 90% of blast furnace molten iron and 10% of high quality steel scrap. The casing blank comprises the following chemical components by weight percent: 0.18-0.35% of C, 0.10-0.35% of Si, 0.55-1.10% of Mn, less than or equal to 0.025% of P, less than or equal to 0.020% of S, 0.60-1.10% of Cr, 0.15-0.50% of Mo, 0.01-0.03% of Al, 0.0005-0.0100% of RE ( RE is the mixed rare earth metals of Ce and La and the weight percents of Ce and La are 67% and 33% respectively), less than 0.10% of Cu, less than 0.10% of Ni and the balance of Fe and trace elements. The process flow of the production method is as follows: pretreating molten iron, smelting in a top-bottom blowing converter, refining in a ladle furnace (LF), performing VD vacuum treatment, performing continuous casting of round billets, performing flame cutting, heating the casing blanks, boring, performing continuous rolling, performing sizing and diameter reducing, cooling, performing saw cutting, performing heat treatment, straightening, performing flaw inspection and lathing screw threads. The mechanical properties of the petroleum casing are as follows: the strength is no less than 140000PSI, the residual stress is no more than 80MPa, the impact power is no less than 80J and the grain size is no less than the grade 8. The product is characterized in that the residual stress is low, the content of harmful elements is low, the impact toughness is high, the grains are small, and the product resists extrusion and is difficult to damage.

The present invention relates to an urban underground engineering simulation test system, underground water simulation system and data acquisition system, in which the simulation box contains horizontal loading plate, horizontal loading device, vertical loading device and several layers of horizontal water inlet pipes. Said invention can implement three-dimensional simulation test of various urban underground railway engineering, tunnel and anderground cave engineering, ground base an foundation work, special underground construction method, side slope engineering and retaining wall engineering, etc.

The invention discloses an unsaturated soil tester for testing deformation of a soil sample of a clay in real time, which belongs to the technical field of manufacturing of geotechnical engineering measuring instruments. The tester comprises a combined pressure chamber, wherein the combined pressure chamber is provided with a bidirectional moving uploading pressure piston, a sidewall of the combined pressure chamber is transparent, and top of the pressure chamber is provided with an air intake; a strengthening component is arranged at an external side of a transparent sleeve, a clay plate is embedded in a submerged groove at a base of the pressure chamber, and the base is provided with a water inlet and a water outlet; a piston head contacted with the soil sample is an end support plate, the other end of a piston rod is connected with an uploading plate, and the uploading plate is provided with a displacement meter; additionally, the tester further comprises a laser measurement device arranged at the external side of the transparent sleeve, and the laser measurement device is used for measuring the lateral deformation of the soil sample filled in the pressure chamber in real time. The tester can accurately test the lateral deformation and the vertical deformation of the clay in a drying process and a humidifying process, so that a soil water characteristic curve of the soil sample of the clay under a dry-humid circulation state can be obtained. The tester is excellent in test accuracy, simple in structure, convenient to operate and easy to control.

The invention provides a dairy cow individual recognition method based on a deep convolutional neural network, and relates to an image recognition method in image data processing. According to the dairy cow individual recognition method, the dairy cow individual can be effectively recognized by extracting characteristics by virtue of a convolutional neural network in deep learning and combining the characteristics with textural features of dairy cows. The dairy cow individual recognition method comprises the following steps: collecting dairy cow data; preprocessing a training set and a test set; designing the convolutional neural network; training the convolutional neural network; generating a recognition model; and recognizing the dairy cow individual by virtue of the recognition model. By virtue of the dairy cow individual recognition method, the defects that an existing algorithm for processing dairy cow images by virtue of an image processing technique is single, the stripe characteristics of the dairy cows are not adequately and well combined with an image processing technique and a mode recognition technique, and therefore, the recognition rate of the daily cows is low are overcome.

The invention discloses a method and special equipment for preparing unidirectionally-distributed steel fiber reinforced concrete and relates to fiber reinforced concrete. The method comprises the following key steps of: pouring a prepared steel fiber concrete mixture into a nonmetallic test mold and putting the test mold into a cavity in a framework of a coil of the special equipment for preparing the unidirectionally-distributed steel fiber reinforced concrete; putting the coil and the test mold on a vibrating table of the special equipment; switching on a direct current power supply of the special equipment to electrify the coil so as to form a magnetic field; applying the magnetic field to the prepared steel fiber concrete mixture so as to orient steel fiber; and keeping the direction of the magnetic field accordant with that of pulling stress during test piece testing or in a working state, wherein the special equipment consists of the vibrating table, the coil and the direct current power supply. Compared with steel fiber reinforced concrete prepared by the conventional method, the unidirectionally-distributed steel fiber reinforced concrete prepared by the method and the special equipment of the invention has breaking strength increased by 25 to 100 percent or saves the steel fiber by 25 to 60 percent.

The invention provides a sparse sample-oriented focus type Web information extraction system and method. The sparse sample-oriented focus type Web information extraction system includes: a webpage interaction module for providing extraction template definition and structuralized extraction result search service; an extraction engine module for providing functions of similar webpage acquisition, sample feature modeling, feature selection, and information extraction; and a data service module for providing a relationship type data service and a non-relationship type data service for the front end and the back end of the system. Based on a small number of samples, high-efficient information extraction can be performed, and the structuralized information can be extracted out form the fields to which different samples belong.

The invention relates to a device and a method for implementation of man-machine information interaction based on eye motion recognition. The device comprises a camera, a distance induction instrument, a gravity induction instrument or gyroscope, a memory and a processor. The camera regularly shoots images in front of a mobile terminal within a certain range, and the distance induction instrument acquires the distance between the mobile terminal and a face when validity and startup verification parameters of the images are judged. The gyroscope acquires directions and an included angle a between the front face of the mobile terminal and a datum plane. The memory stores image data, image information and data required by image preprocessing. The processor processes data of each module including an image acquisition module, an image validity judgment module, an eye image extraction module, a pupil center position analysis module, a pupil center position sequence acquisition module, a position sequence analysis module and a motion processing module. The device and the method for implementation of man-machine information interaction based on eye motion recognition bring brand-new experience to users, and the users can freely control the mobile terminal only by moving eyeballs, so that higher humanization is realized.

The invention is concerned with the navigation system and the emendation method of the navigation orientation data, in order to conquer the shortage of the existing technology, provide a emendation method that can emendate the navigation orientation data accurately especially fit for farmland busywork. The invention is: the map registration provides the more accurate electronic map to the system, compares the orientation data point of every sensor and the known skyway that prearranges to be track, and then processes general estimation, works out emendation data point with higher reliability. The invention is consists of four processes namely the map registration, the sensor data prearrangement, the emendation value decision-making, the new orientation data point creating.

The invention relates to a leak detection positioning method and a system based on the infrared imaging technology, which belongs to the detection technical field. The leak detection positioning system provided by the invention comprises a control device, an infrared imaging device, a cooling device, a sensing device, an aeration device and a display device. Gas with certain pressure is cooled down by the cooling device to serve as a test medium, the control device drives valves to aerate the tested object and completes the sequential control, the sensing device checks the status of the system, the infrared imaging device collects the infrared images of the tested object, the infrared images are transmitted to the control device and undergo a series of image processing operations for leak analysis, leak amount calculation and leak positioning, and test results are displayed on the display device. The leak detection positioning method and the system based on the infrared imaging technology has the advantages of high test accuracy, high efficiency of leak positioning, high anti-interference capacity and non-contact automatic measurement.

The invention belongs to the field of agricultural films, and proposes a biodegradable weed-removing film and a preparation method thereof. The herbicide is mixed with a coupling agent, a biodegradable resin and a processing aid, and extruded and granulated in an extruder to obtain a biodegradable mulch film. Biodegradable weed-removing masterbatch, this kind of weed-killing masterbatch contains 10-90% biodegradable resin, 2-80% herbicide, biodegradable resin includes PLA, PBS, PPC and PBAT; then biodegradable weed-removing The masterbatch and biodegradable polymer materials are mixed according to the traditional plastic blow molding process to obtain a biodegradable weed-removing mulch film. The proportion of herbicides in this weed-killing mulch film is 0.5-20%. The biodegradable weed-removing mulch film prepared by this method , can adapt to the climate and soil environment in various places, meet the requirements of increasing temperature and moisture conservation required for plant growth and development, and can be decomposed by microorganisms in the cultivated land environment after reaching the use requirements; the preparation method of the present invention is simple and easy, and the prepared film can It meets the use requirements of mechanical farming and has broad application prospects.

The invention relates to an aluminum alloy panel for automobile body lightweight and a preparing method of the aluminum alloy panel. The aluminum alloy panel is characterized by comprising chemical components including, by mass percent, 1.2%-2.2% of Mg, 0.8%-1.5% of Si, 0.1%-0.3% of Fe, 0.2%-0.8% of Mn, 0.2%-0.5% of Cu, 0.05%-0.2% of Zr, 0.01%-0.5% of Cr, 0.05%-0.2% of La, smaller than or equal to 0.2% of Zn, smaller than or equal to 0.1% of Ti, smaller than or equal to 0.05% of each of the other impurity elements, and the balance Al, wherein the total content of the other impurity elements is smaller than or equal to 0.15%. According to the preparing method of the aluminum alloy panel for automobile body lightweight, the aluminum alloy panel is obtained through smelting, refining, casting, homogenizing, head cutting and face milling, hot rolling, intermediate annealing, cold rolling and solution treatment. The aluminum alloy panel for automobile body lightweight has high baking hardening performance and good forming performance, and the aluminum alloy panel has good comprehensive performance through reasonable optimization of the content of the elements in the alloy and the heat treatment technology.

The invention discloses a green clean energy-saving antwear hydraulic oil, composed of hydrofined II-type mineral basic oil, refined plant oil and synthetic hydrocarbon as well as compound additive, applied to electric liquid servo hydraulic systems in the trades of sugar manufacturing, drug making, daily chemicals, light industry, food, sanitation, etc, and especially applied to the limitation to solid particles in oil and the nontoxic use environment in related trades. It mainly makes the bubbling and weeping in the use and storage and transport course of the related trades unable to destroy the quality of corresponding products, unable to cause mutagenic substances and chemical toxic substances and uneasy to cause pollution and has better internal-combustion degradability.

A construction method for light weight concrete wall, floor plate and sound screen on road follows the steps as: A. put plate into a module frame; B. fill in a premier layer of concrete on the plate; C. on the premier concrete layer put a steel web pre-inserted with heat preservation material and connected to the frame; D. grout a secondary layer of concrete filling into the steel web or put plate on it; E. modeling press. F. standing and harden.

The invention relates to a leakage detection and location method and a system thereof based on infrared imaging technology, belonging to the detection technology field. The leakage detection and location system comprises a control device, an infrared imagery device, a cooling device, a sensing unit, an air charging system and a display device. Gas with certain pressure is cooled by the cooling device to be used as test medium, each value is driven by the control device to implement aeration completion timing control on a measured object, and the system state is detected by the sensing unit, a infrared picture of the measured object is collected by the infrared imagery device and then transmitted to the control device to undergoing a series of image processing operations for analysis, leakage amount calculation and leakage point location, the test results is showed on the display device. The invention has high detection precision, high-efficiency for leak point locating, strong anti-interference ability and can take non-contact automatic measurement.

The invention relates to a method for measuring the contents of silicon-calcium elements in a silicon-calcium alloy. After a sample is grinded and passes through an analysis sieve with 180-200 meshes, the method provided by the invention is characterized in that the sample is fused at high temperature by adopting an alkali fusion method; the fusion course comprises the steps of: weighing and adding the sample and sodium hydroxide solid to a nickel crucible; after adding the mixture to a high temperature furnace to be heated, taking out and cooling; washing the fused analysis sample to an evaporation dish by utilizing deionized water and hydrochloric acid; drying and adding the hydrochloric acid to be acidized; adding warm water to be stirred until soluble salts are completely dissolved; instantly filtering by utilizing quantitative filter paper; enabling the filtrate to be constant volume in a volumetric flask to prepare a sample analysis solution; and maintaining the precipitations to be analysis components. The method for respectively measuring the contents of silicon and calcium provided by the invention comprises the following steps: measuring the content of the silicon with precipitation and filter paper by utilizing a weight analysis method after ashing, firing, cooling and weighing; and measuring the content of the calcium with the sample analysis solution by utilizing a volumetric method. The method provided by the invention has the advantages of once sample weighing, multi-element continuous measurement, time and labor saving, energy conservation, consumption reduction and the like and can reduce the damage of hydrofluoric acid to human bodies and environments.

The invention provides a security remote control system and method for industrial equipment. The system comprises industrial equipment, a control terminal and a cloud platform, wherein a security module I is arranged in the industrial equipment, a security module II is inserted into or arranged in the control terminal, the cloud platform comprises a security access gateway, a management system, aCA certificate management system and a forwarding server, and a security module III is arranged in the security access gateway. In remote control, the industrial equipment and the security access gateway perform bidirectional identity authentication and key negotiation and create a first session key; the control terminal and the security access gateway perform bidirectional identity authenticationand key negotiation and create a second session key; the control terminal and the industrial equipment perform bidirectional identity authentication and key negotiation through the forwarding serverand then create a third session key; and the control terminal performs security remote control on the industrial equipment by using the third session key through the forwarding server.

The invention relates to a method and a system for quantum communication security. An Alice terminal comprises a watchdog detector, an optical attenuator, a phase modulator, a reflector, a controller and a photon emitter; and a Bob terminal comprises a laser, a time division multiplex / demultiplex system, a phase modulator, a single photon detector, a controller, an optical switch and a reflector. The method and the system have the advantages that: (1) the two-way, stable and safe distribution of quantum keys is realized, the polarization and phase change of a single photon can be automatically compensated, and the aim of stable long-distance transmission is achieved; (2) the Alice terminal adopts the watchdog detector, on one hand, Trojan attack and intermediary attack can be detected by measuring the number of weak pulses reaching or leaving the Alice terminal, so that the communication security is improved greatly, and on the other hand, the communication speed and communication distance of the system are improved greatly; and (3) the Alice terminal and the Bob terminal can be adjusted and corrected respectively, can select mu independently without transmitting photons by means of unsafe optical fiber lines so as to ensure the system security.

The invention provides an intelligent remote monitoring box-type substation, which comprises a 6-10kV high-voltage circuit breaker, a distribution transformer, a low-voltage main switch control cabinet, a low-voltage reactive compensation cabinet, a low-voltage branch switch control cabinet, a metering device, a temperature measuring device, an anti-theft device, a remote automatic control terminal, a power substation computer connected with a two-way communication module, a power manager mobile phone and a mobile communication base station, wherein the remote automatic control terminal comprises a singlechip circuit, an electric parameter detection circuit, a harmonic detection and analysis unit circuit, a transmitting and receiving communication module, an output control signal circuit, a switch state detection circuit and a data communication interface circuit; and the singlechip circuit is respectively connected with the electric parameter detection circuit, the harmonic detection and analysis unit circuit, the switch state detection circuit, the output control signal circuit, the data communication interface circuit, and the transmitting and receiving communication module. The box-type substation has the advantages of practicability, economy, convenient use, high-efficiency operation and suitability for national conditions.

The invention relates to a folate-targeted reduction sensitive drug-carrying polymer nano-micelle as well as a preparation method and application thereof. The delivery carrier is prepared by taking anamphiphilic triblock copolymer PCL-ss-PEG-ss-PCL as a material, and a chemotherapeutic drug adriamycin amycin and a photosensitizer indocyanine green are entrapped in a hydrophobic core of the micelle. Besides, phospholipid DSPE-PEG-NH2 with an active group is introduced into the preparation process, the DSPE end of the phospholipid has strong hydrophobic property and is inserted into the hydrophobic PCL core of the polymer micelle, the flexible hydrophilic PEG long chain exists on the outer surface of the micelle, FA with a targeting effect is connected to a PEG active distal end of the surface of the polymer micelle, and functions of active tumor targeting and reduction response drug release are integrated. The folate-targeted reduction sensitive drug-carrying polymer nano-micelle disclosed by the invention has the advantages of being small in particle size, high in dispersion property, high in drug loading capacity and encapsulation efficiency and excellent in photothermal conversion effect, can realize reduced trigger drug release, fluorescence imaging of tumor sites, tumor targeting drug delivery and chemotherapy-photothermal combination therapy and improve the tumor inhibition effect, and has wide application prospects in the targeted combination therapy aspect of tumors.

The invention relates to an aluminum alloy refining gent, the aluminum alloy refining agent is characterized by comprising the following components by mass percent: 35-50% of KCl, 30-40% of NaCl, 5-8% of CaF2, 8-15% of Na3AlF6, 5-10% of Mg2N3, 3-6% of C2Cl6 and 0.2-0.5% of rare earth. The aluminum alloy refining agent is good in cleaning effect, strong in degassing capacity, and especially capable of removing aluminum oxide impurity with slight size, reducing the metal loss, and improving the microstructure of a round ingot casting after the aluminum alloy is molten.

This invention introduces an alloy and its non-crystal taking rare earth, Mg powder, Ni powder as the master raw materials and its formula is: Rex Mgy Ni4-zAz, Re=Ca, La, Ce, Pr, Nd, y mixed rare earth, A=Ti, Co, V, Zr, Nb, Mn, Mo, Cu, Al, Fe among which, x and y is greater than or equal to O but less than or equal to 2 separately and z is greater or equal to zero but less than or equal to 1. The preparation method is to mix the raw materials in proportion then to be milled and pressed to a block to charge a quartz capsule housing it with Ar an package via temperature risen, constant and cool down to room temperature to produce the needed alloy, then the material with the formula of Rex MgyNi4-zAz is carried out with high energy ball mill or mechanical alloying to get related non-crystal.

The invention is a method for recovering Au and Cu from Au-plated PCB waste, adopting oxydol and vitriol as reacting reagent to recover Au and Cu from the Au-plated PCB waste. And it researches the effect of concentration and utilization of vitriol, oxydol utilization, reacting conditions, and reacting time on the results. And the experimental result indicates that both overhigh and overlow acidity are detrimental to the Au and Cu recovery. Considering from the cost and time aspects, it advances the optimum concentration and utilization of vitriol. And the Au peeling ratio can be 99% and the Cu recovery rate can be 99%; after purified, the obtained Au has purity up to 99%, and the obtained bluestone can crystallize to obtain bluestone products. And the used reagent is nontoxic, cheap and easy to obtain; no harmful matters are generated in the experiment course; and the invention has better economic and social benefits and wide development future.

The invention relates to a distributed network application layer multicast routing method based on network coding. Directed at data distribution of a single information source multiple information sinks distributed network, multiple mutual disjointed data distribution paths are established between a source node and each destination node, each distribution path can be established on the principle of maximal access bandwidth, minimal transmission delay and lowest transmission cost. At the same time, each destination node can be used as a middle node of other destination nodes to participate in multicast path building. As for the public links of different destination nodes, stochastic linear network coding is carried out on multiplex data flows on nodes connected with the public links, avoiding transmission collision and conflict between data flows. The invention has the advantages that the multicast communication transmission capacity of a distributed network is effectively improve, the usage efficiency of network resources is enhanced, and the total cost of network transmission is lowered.

Provided is a blood sampling pen of which the penetration depth is adjusted at the rear portion. The blood sampling pen comprises a pen cap, a cap base, a shoot rod and a housing and is characterizedin that depth adjustment outer sleeves and depth adjustment middle sleeves are arranged on a blood sampling pen body, the shoot rod is located in the middle sleeves, and the middle sleeves are sleevedwith the outer sleeves; the outer sleeves are rotatably connected relative to the housing in the circumferential direction and connected in a positioning mode in the axial direction at the same time,and a rotary positioning mechanism is arranged between the outer sleeves and the housing; the middle sleeves are connected relative to the housing in the circumferential direction in a positioning mode and slidably connected in the axial direction at the same time, a rotary moving mechanism is arranged between the middle sleeves and the housing, and a passive impact surface is arranged on a positive impact surface, relative to the shoot rod, on the middle sleeves; a manual adjustment ring exposed at the outer side of the rear middle portion of the blood sampling pen body is arranged on the outer sleeves, the manual adjustment ring is rotated to drive the middle sleeves to move in the axial direction, and accordingly the penetration depth of a needle tip is changed. In the blood sampling pen of which the penetration depth is adjusted at the rear portion, a penetration depth adjustment mechanism is separated from the head of the blood sampling pen body and transferred to the rear middleportion of the blood sampling pen body, and the problem that blood sampling needle installation interferes the penetration depth is completely solved.

The invention belongs to the technical field of low alloy steels and production processes thereof, and particularly relates to a high-property super-thick steel plate for a 500 MPa-level engineering structure and a manufacturing method thereof. The high-property super-thick steel plate comprises the following components in percentage by weight: 0.020%-0.070% of C, 0.30%-0.60% of Si, 1.35%-1.60% of Mn, 0.010%-0.020% of P, S<=0.005%, 0.030%-0.060% of Nb, 0.010%-0.030% of Ti, 0.020%-0.050% of Als, 0.35%-0.45% of Cu, 0.20%-0.40% of Cr, 0.30%-0.60% of Ni, 0.05%-0.10% of Mo and the balance of Fe and inevitable impurities. In addition, the high-property super-thick steel plate disclosed by the invention meets the requirements that the welding cold cracking sensitivity coefficient Pcm is less than or equal to 0.20% and the ASTMG101-01 corrosion-resistant index I is more than 6.0. The manufacturing method disclosed by the invention adopts the low-C Cu-Ni-Cr-Mo-Nb-Ti component system, prevents the grain in an HAZ (Welding Heat Affected Zone) from being growingn because a grain refining effect achieved by compositely adding Nb-Ti is higher than the grain refining effect achieved by independently using V, enhances the obdurability of a steel plate base body and HAZ and is contributivee to enhancinge the welding line energy.

The invention relates to a method for comprehensively modifying saline and alkaline land. The method comprises the following steps: preparing a saline and alkaline land modifier from 50-80kg of 95wt% (percent by weight) potassium sulfate, 30kg of 98wt% zinc sulfate, 30kg of 95wt% aluminum sulfate, 20kg of 95wt% manganese sulfate, 20kg of calcium chelating agent, 40kg of 95wt% calcium borate, 100kg of microbial agent, 2,000kg of crop straw with the length of 3-10cm and 300-500kg of 39wt% humic acid; leveling soil, restoring ridges and digging ditches when the temperature is constantly stable and is over 15 DEG C; uniformly scattering the saline and alkaline land modifier on the surface of the land; turning up the soil so that the saline and alkaline land modifier is uniformly distributed in the deep soil layer of 0-20cm below the surface of the land; irrigating the land with water depth of 5cm for about 10 consecutive days; transplanting saline and alkaline resisting rice seedlings to the modified saline and alkaline land; applying a small amount fertilizer for multiple times without changing the total amount of the fertilizer; and keeping the water in the land shallow.

The invention discloses a titanium alloy used for an aviation fastener and a manufacturing method, and relates to a titanium base alloy. The titanium alloy comprises the following elements in percentage by mass: 5 to 9 percent of aluminum (Al), 1 to 6 percent of vanadium (V), 8 percent of molybdenum (Mo), 11 to 15 percent of niobium (Nb), 1 percent of zirconium (Zr), 0.1 to 2 percent of chromium (Cr) and the balance of Ti, wherein an amorphous titanium alloy inoculant is added in a melting process of the titanium alloy. The titanium alloy used for the aviation fastener has more reasonable new element compositions; the amorphous titanium alloy inoculant is added into the melting process; a heterogeneous nucleation core when the titanium alloy is solidified is added; the crystal size of an as-cast titanium alloy is refined; the tensile strength of a titanium alloy product used for the aviation fastener manufactured by the manufacturing method for the titanium alloy used for the aviation fastener can reach 1,370 MPa; the elongation rate can reach 11.6 percent; and the titanium alloy has both strength and flexibility and can be widely used for fasteners for manufacturing a civil aviation aircraft.

The invention provides a multi-protocol communication method, a smart home gateway and a multi-protocol communication system. The method comprises the the steps of receiving first data packets of different protocol data formats; converting the first data packets of different protocol data formats into second data packets of a self-defined data format; extracting a target address segment, a targetprotocol type segment, an instruction type segment and a data content segment in the second data packet with the self-defined data format; and if the extracted instruction type segment is a non-emptyfield, determining the content of the control instruction through the instruction type segment, screening out pre-stored Internet of Things devices and the like consistent with the protocol type corresponding to the target protocol type segment, and if the number of the screened Internet of Things devices is equal to 1, directly taking the corresponding Internet of Things device as a target deviceand the like. According to the invention, while the compatibility and universality of the gateway are improved, the design and development difficulty of a gateway application layer is reduced, the multi-protocol communication efficiency is improved, and the operation cost of the multi-protocol gateway is reduced.