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40 results about "Metallic conduction" patented technology

Metallic conduction: the movement of electrons through a metal, with no changes in the metal and no movement of the metal atoms.

Adjustable light for underwater photography

An underwater diving light includes efficient cooling of LEDs and other internal electronics by heat transfer to ambient water. The water is in contact with a metallic face plate or puck that conducts heat via contiguous metal from an LED circuit board or LED face plate. Ambient water can enter the assembly to spaces between the face plate and an intermediary plate at the front of a housing to efficiently cool the LEDs and associated electronics. In a high-output form the light can emit 8000 lumens, and in this embodiment the battery is cooled by ambient water. The face plate or puck is interchangeable, for different lighting characteristics.
Owner:LIGHT & MOTION INDS

LED lamp module with functions of three-dimensional convection, metal conduction and pollution prevention

The invention discloses a high-performance LED lamp module with functions of three-dimensional convection, metal conduction and pollution prevention, and aims at improving the heat dispersion and the transparence and prolonging the service life of an LED lamp. The LED lamp module comprises heat radiating fins (1) with through holes, an air-vent (2) formed by parallel fins, an aluminium cavity (3) for placing the LED and a metal welded PCB, a metal welded PCB (4), an LED (5) and the like. The LED (5) and the metal welded PCB (4) are welded integrally in the aluminium cavity (3) after welded together, and the end face of the aluminium cavity is encapsulated by using toughened glass (13) and sealant to form an LED light source module. The heat radiating fins (1) are welded on the back of the aluminium cavity. The fins are at intervals of 5-15 mm to form a transverse ventilation air flue (14). The fin bodies are provided with a plurality of through holes to form a longitudinal ventilation air flue (15). Intervals of 5-30 mm respectively exist between the aluminium cavities and between the aluminium cavity and the lamp support. The fins are in parallel placed to form a vertical ventilation air flue (16). Thus, the transverse ventilation air flue, the longitudinal ventilation air flue and the vertical ventilation air flue are smooth, and temperature difference airflow convection and air natural convection formed by the heating of the LED are combined for efficiently radiating the heat.
Owner:CHINA JILIANG UNIV

Diamond based electrochemical sensors

A diamond based electrochemical band sensor comprising: a diamond body; and a plurality of boron doped diamond band electrodes disposed within the diamond body, wherein at least a portion of each of the plurality of boron doped diamond band electrodes is doped with boron to a level suitable to achieve metallic conduction, the boron doped diamond electrodes being spaced apart by non-conductive intrinsic layers of diamond, wherein the diamond body comprises a front sensing surface with the plurality of boron doped diamond band electrodes being exposed at said sensing surface and extending in an elongate manner across said surface, and wherein each boron doped diamond electrode has a length / width ratio of at least 10 at the front sensing surface.
Owner:ELEMENT SIX TECH LTD

Magnetic electric wire tool

ActiveCN103326146ASolve the problem of easy slipping,Solve the problem of inconvenient disassembly and assemblyElectric connection structural associationsMetallic conductionCrocodile clip
The invention discloses a magnetic electric wire tool, and belongs to the field of electrical auxiliary connecting devices. The magnetic electric wire tool comprises a bench insulator body, metallic-conduction connecting pieces, guide line fastening screws and guide lines. Each metallic-conduction connecting piece comprises a metallic-conduction outer shell and a cylindrical magnet, the cylindrical magnets are inlaid inside the metallic-conduction outer shells, and the metallic-conduction outer shells are inserted into the bench insulator body. Entrance holes are formed in the surfaces of the upper portions of the metallic-conduction connecting pieces, and the guide lines are inserted into the entrance holes. Screw holes are formed in the side faces of the metallic-conduction connecting pieces, and the screw holes are matched with the guide line fastening screws to enable the guide lines to be fixed. In the using process, the tool is connected to a screw type power binding post of a device to be measured through magnetism, and thus the problems that slipping can occur easily and dismounting and mounting are inconvenient when an alligator clip is connected to the screw type power binding post are solved.
Owner:FUJIAN QIANGLI PHOTOELECTRICITY

Electromagnetic shielding cover

The present invention discloses an electromagnetic shielding cover, comprising a shielding frame and a shielding lid. The shielding lid is made from a metallic conduction shielding adhesive tape. The shielding frame is adhered to the surface of the shielding cover. The shielding cover has the advantages that the shielding cover can reduce the material cost, the labor cost and the quality inspection cost of the manufacture, the size of the shielding cover can be reduced, the electromagnetic leakage due to the gap between the shielding lid and the shielding cover can be avoided, and the handling operation is simple and convenient.
Owner:贝联特种金属制品(上海)有限公司

Metallic conduction network of composite airplane

InactiveCN107323648ASolving Grounding ProblemsDoes not occupy the internal space of the bodyFuselage bulkheadsTransmitted powerRadio frequency
The invention relates to the technical field of airplane structure design, in particular to a metallic conduction network of a composite airplane. Main metallic conduction strips fixed to the inner wall of an airplane skin transmit power supply and electric signals to airborne equipment through vertical metallic conduction strips fixed to an airplane vertical structural member, horizontal metallic conduction strips fixed to an airplane horizontal structural member, and extending metallic conduction strips in sequence, wherein the airplane vertical structural member is fixed to the airplane skin, and the airplane horizontal structural member is fixed to the airplane vertical structural member. The metallic conduction strips are jointed in sequence and connected with one another with low impedance, therefore, the integral metallic conduction network is formed inside an airplane, the ground connection reference is provided for an airplane system and the airborne equipment, and the metallic conduction network is used for ground connection of the airplane and the interior airborne equipment for radio frequency protection, power supply backflow, lightning protection, electrostatic protection and protection against electric shock.
Owner:SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA

Packaging structure for photoelectron integrated chip

The invention relates to a packaging structure for a photoelectron integrated chip. The packaging structure comprises a dielectric substrate, a metallic conduction post, and a matched resistor. A ground electrode G, a signal electrode S, a matched resistor for impedance matching are arranged on the surface of the dielectric substrate, wherein the ground electrode G and the signal electrode S are used for external and electric connection. The metallic conduction post is used for connecting the signal electrode and an electrode of a photoelectron integrated chip, thereby realizing signal transmission between the signal electrode and the electrode of the photoelectron integrated chip; and the matched resistor connected in series between the signal electrode S and the ground electrode G is connected in parallel with the photoelectron integrated chip to realize non-gold-wire impedance matching, thereby realizing impedance matching of a high-internal-resistance chip. According to the packaging structure, gold wire usage is avoided completely; and the influence on the device performance by a parasitic parameter introduced by the gold wire can be reduced. The packaging structure is suitable for packaging of single-channel or multi-channel integrated chips.
Owner:山东中科际联光电集成技术研究院有限公司

Transparent substrate for photonic devices

The present invention relates to a transparent substrate (1) for photonic devices, comprising a support (10) and an electrode (11), said electrode (11) comprising a stack comprising a single metallic conduction layer (112) and at least one coating (110) having properties for enhancing the light transmission through said electrode, said coating (110) having a geometric thickness at least greater than 3 nm and at most less than or equal to 200 nm, said coating (110) comprising at least one light-transmission enhancement layer (1101) and being located between the metallic conduction layer (112) and the support (10) on which said electrode (11) is deposited, such that the optical thickness T01 of the coating (110) provided with light-transmission enhancement properties and the geometric thickness TME of the metallic conduction layer (112) are linked through the equation: TME = TME_o + B*sin(pi*TD1 / TD1_0) / n3 support where TME_o, B and TD1_0 are constants with TME_o having a value lying in the range from 10.0 to 25.0 nm, B having a value lying in the range from 10.0 to 16.5 and TD1_0 having a value lying in the range from 23.9 *nD1 nm to 28.3 *nD1 nm where nD1 represents the refractive index of the light-transmission enhancement coating at a wavelength of 550 nm, nsupport represents the refractive index of the support at the 550 nm wavelength.
Owner:AGC GLASS EUROPE SA

Hot air welding machine and working method and using method thereof

PendingCN111016185APrevent proliferationAvoid bright edgesEngineeringMetallic conduction
The invention belongs to the technical field of plastic pressing and hot melting, and particularly relates to a hot air welding machine and a working method and using method thereof. The hot air welding machine comprises a rack, and a pressurizing mechanism and a metal conduction hot melting mechanism are arranged on the rack; the metal conduction hot melting mechanism is suitable for carrying outhot melting on a wiredrawing cloth, an upper edge covering belt and a lower edge covering belt laminated at the inlet of the pressurizing mechanism; and the pressurizing mechanism is suitable for pressurizing, welding and conveying the hot-melted wiredrawing cloth, the upper edge covering belt and the lower edge covering belt. According to the hot air welding machine, heat needed by welding is obtained in a heat conduction mode, hot air penetrates through a hot air cavity and then is exhausted, the hot air does not need to make direct contact with the wiredrawing cloth, the upper edge covering belt and the lower edge covering belt, the heat output range is centralized, hot air diffusion is prevented, material wrinkling deformation and bright edges generated in the periphery of the weldingposition are avoided, and the welding quality is improved. The small-size hot air cavity conducts heat conduction welding, high-temperature heat can be continuously output, and the welding efficiencyis high.
Owner:CHANGZHOU RUFA MACHINERY CO LTD

Optical cable

The present invented photoelectricity cable is also known as electric light cable, which is a transmission medium-wire cable capable of same way transmitting electric energy and electrical signal. The metallic conduction wire core of Said wire cable is parallel with optical fiber of cable, optical fiber longitudinal located inner or outer of reinforced member, metallic conduction wire core and optical fiber covered with insulation protection layer and integrated by external sheath layer, photoelectricity cable cross section presenting dumb-bell shape. Fiber-optic reinforced member can be plastics frame or steel wire and metal longitudinal binding band. Photoelectricity cable can meet the requirement of less than 10 kw electric energy transference and optical fiber network communication.
Owner:苑宝义

Double-voltage output photovoltaic junction box

InactiveCN104467658AChange the output voltage parametersSimple structurePhotovoltaicsPhotovoltaic energy generationElectricityEngineering
The invention discloses a double-voltage output photovoltaic junction box. The double-voltage output photovoltaic junction box comprises a junction box body and a junction box cover arranged at the top of the junction box body, an output line is arranged on one side of the junction box body, a solar assembly leading-out line inlet connected with a solar battery pack is formed in the bottom of the junction box body, a voltage selection pulling switch is arranged on the junction box cover, and a first binding post, a second binding post, a third binding post, a fourth binding post, a positive pole power output hole post and a negative pole power output hole post are arranged in the junction box body. The first binding post is connected with the negative pole power output hole post through a metallic conduction strip, and the fourth binding post is connected with the positive pole power output hole post through a counter-charging-preventing diode. An isolation voltage switching plate is arranged between the second binding post and the third binding post in a sliding mode and electrically connected with the voltage selection pulling switch. The double-voltage output photovoltaic junction box has the advantages that two voltages can be selectively output, the structure is simple, and use is convenient.
Owner:SUN EARTH SOLAR POWER

Lithium ion battery

The invention provides a lithium ion battery which comprises a shell body. The shell body comprises the following parts: at least one set of anode layers and cathode layers; a diaphragm layer which forms connection between the anode layer and the cathode layer; electrolyte, wherein electrolyte LiCLO4 concentration is 1.5 mol / L, volume ratio of a propylene carbonate solvent and a glycol dimethyl ether solvent is 8:1. Porous permeable layers are provided between the anode layer or the cathode layer and the diaphragm layer. The lithium ion battery has the advantages of simple technology, leakage prevention, simultaneously, a utilization rate of an electrode material is raised, combination degree between a active material and a metal conductive material is raised, and electrical conductivity and mechanical reliability of electrode compound materials of the invention are substantially raised.
Owner:虞海盈

Strain gauge and its production method

The present invention relates to a strain gauge having a conductive fluid made of a glycerin / aqueous salt mixture, and methods of making the strain gauge. The strain gauge comprises a polymer sleeve; a fluid piezoresistive material made by the glycerin / aqueous salt mixture; a metal tube, a metal conductive pad or a conductive polymer pad arranged on both ends of the polymer sleeve, wherein the fluid piezoresistive material is included in the polymer sleeve. According to the invention, the strain gauge is capable of measuring large displacement of around 30% true strain.
Owner:THE HONG KONG POLYTECHNIC UNIV

New energy vehicle power source controllable heating piece

The invention discloses a new energy vehicle power source controllable heating piece which comprises a doughnut-shaped metal frame. The outer lateral side of the doughnut-shaped metal frame is vertically welded with a fixed connection block, a fixed through hole is formed in the middle of the fixed connection block and penetrates the upper and lower faces of the fixed connection block, rotating columns are connected between the inner side walls of the doughnut-shaped metal frame in an inserted manner and are in a left-right symmetric state on the inner side walls of the doughnut-shaped metal frame, metal conduction pieces are welded between one ends, away from the doughnut-shaped metal frame, of the rotating columns, a metal contact hole is formed in one end of the side face of each metalconduction piece and penetrates the upper surface of the corresponding metal conduction piece to extend to the inside, one end, extending to the inside of the corresponding metal conduction piece, ofeach metal contact hole is welded with a heating lead, and a metal contact column is vertically welded on one side face, away from the corresponding metal contact hole, of each metal conduction piece.The device can cool a power source when the power source is too high in temperature during heating.
Owner:浙江仁丰科技有限公司

UHF smart shelf rfid reader antenna

The invention discloses an antenna for an ultra-high frequency band intelligent shelf RFTD reader. The upper PCB substrate and the lower PCB substrate are supported by nylon columns; There are multiple lower surface metal conduction strips, and the upper surface is copper-clad as a whole; the coaxial street, the upper surface metal conduction strip, the lower surface metal conduction strip and the matching load are connected in series through conductive columns, and the width of the upper surface metal conduction strip is according to the signal transmission The order gradually increases, and the sum of the phase shifts generated by the adjacent single upper surface metal conduction band and the single lower surface metal conduction band is an integer multiple of the wavelength. The invention has strong current, can conveniently design antennas with different areas, and the magnetic field on the upper part of the antenna is evenly distributed.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Positive temperature coefficient macromolecular composition, positive temperature coefficient protection component and manufacturing methods

ActiveCN101885912AShorten manufacturing process timeImprove the negative temperature coefficient effectNegative temperaturePolyamide
The invention relates to a manufacturing method for a positive temperature coefficient macromolecular composition, which comprises the following steps of: performing a crosslinking reaction on siliane grafted polyamide to obtain crosslinked silane grafted polyamide; and adding a metallic conduction material or a non-metallic conduction material and selectively adding an anti-oxidant into the crosslinked silane grafted polyamide for blending. The invention also discloses the positive temperature coefficient macromolecular composition, a positive temperature coefficient protection component and a manufacturing method for the positive temperature coefficient protection component. The manufacturing method of the invention can save the whole manufacturing process time of the protection component and improves a negative temperature coefficient effect, and the positive temperature coefficient protection component can effectively pass a stability test.
Owner:TATUNG UNIVERSITY +1

High-pressure electric fuel gas injection single ceramic combustion chamber of diesel engine

The invention relates to a combustion chamber of a diesel engine, in particular to a high-pressure electric fuel gas injection single ceramic combustion chamber of the diesel engine and belongs to the technical field of internal combustion engines. The high-pressure electric fuel gas injection single ceramic combustion chamber of the diesel engine comprises a ceramic combustion chamber, a ceramic high-pressure gas chamber, a fastening thread, a metal discharging ring, a gas injection hole, a conductive metal strip, a metal conducting rod, a ceramic high-pressure gas chamber metal discharging top, a concave ceramic sheet, a high-voltage static generator and a high-voltage ignition control panel. By the high-pressure electric fuel gas injection single ceramic combustion chamber of the diesel engine, gas molecules can do orientation movement, irregular Brownian movement of the gas molecules in the three-dimensional space is changed into orientation movement, and a piston is directly pushed, so work doing efficiency is improved. The ceramic combustion chamber is adopted, so a heat-dissipating effect is greatly retarded, the temperature of the combustion chamber is increased, the work doing process of fuel gas is changed from deflecting isothermal expansion into deflecting adiabatic expansion, and hot work efficiency is improved. A high-voltage-resistant large capacitor is used for absorbing high-voltage pulse current and then discharges to a power supply, so electric energy can be saved.
Owner:昆明理工大学设计研究院有限公司

Circuit protective sleeve for solar power generation

The invention relates to a circuit protective sleeve for solar power generation. The circuit protective sleeve comprises an innermost metallic conduction element, wherein the outside of the metallic conduction element is surrounded by a phosphatizing plastic ring, the outer surface of the phosphatizing plastic ring is surrounded by a hard polyester material ring, and the outside of the hard polyester material ring is surrounded by a fiber reinforcement stiffening ring. The metallic conduction element is made of titanium alloy. The circuit protective sleeve effectively overcomes the defects that the circuit protective sleeve is corroded due to the attack of environment, and the functions of degrading prevention, hot attack prevention and ageing resistance do not exist.
Owner:XIAN JUNXIE OPTOELECTRONICS TECH

Visual persistence motion display screen conducted by liquid metal

The invention discloses a liquid metal conduction visual persistence motion display screen which comprises an annular structure, a plurality of straight rods arranged on the annular structure, lamp strips arranged on the straight rods, a power unit connected with the annular structure and a control and power supply circuit connected with the annular structure and the power unit. The annular structure is provided with a connecting structure, the control and power supply circuit is provided with a connecting port, the connecting structure is electrically connected with the connecting port, and the contact surface of the connecting structure and the connecting port is coated with liquid metal. The liquid metal is coated on the contact surface of the connecting structure and the connecting port, so that the transmission of electric energy and electric signals is met, the situation of unstable connection caused by heating and temperature rise of the annular structure in a high-speed rotating state is avoided, the stability of electrical connection is improved, and the situation that the visual effect is influenced due to disconnection is avoided.
Owner:云南巨晶新材料有限公司

Humidity sensing device

The invention provides a humidity sensing device which comprises a sensing device which includes an electric sensing method and a data processing method, wherein, the electric sensing method is used for detecting the electrical characteristics expressed by the gas due to humidity change, and the data processing method is used for treating electrical information detected by the electric sensing method to lead the electrical information to be converted into humidity information of the gas. The electric sensing method comprises a sensing element which includes a first metallic conduction parallel plate and a second metallic conduction parallel plate which are arranged in a corresponding way, so as to ensure the electrical information detected by the electric sensing method to be the capacitance value of the sensing element.
Owner:SYSPOTEK CORP

A magnetic wire tooling

The invention discloses a magnetic electric wire tool, and belongs to the field of electrical auxiliary connecting devices. The magnetic electric wire tool comprises a bench insulator body, metallic-conduction connecting pieces, guide line fastening screws and guide lines. Each metallic-conduction connecting piece comprises a metallic-conduction outer shell and a cylindrical magnet, the cylindrical magnets are inlaid inside the metallic-conduction outer shells, and the metallic-conduction outer shells are inserted into the bench insulator body. Entrance holes are formed in the surfaces of the upper portions of the metallic-conduction connecting pieces, and the guide lines are inserted into the entrance holes. Screw holes are formed in the side faces of the metallic-conduction connecting pieces, and the screw holes are matched with the guide line fastening screws to enable the guide lines to be fixed. In the using process, the tool is connected to a screw type power binding post of a device to be measured through magnetism, and thus the problems that slipping can occur easily and dismounting and mounting are inconvenient when an alligator clip is connected to the screw type power binding post are solved.
Owner:FUJIAN QIANGLI PHOTOELECTRICITY

A package structure for optoelectronic integrated chip

The invention relates to a packaging structure for a photoelectron integrated chip. The packaging structure comprises a dielectric substrate, a metallic conduction post, and a matched resistor. A ground electrode G, a signal electrode S, a matched resistor for impedance matching are arranged on the surface of the dielectric substrate, wherein the ground electrode G and the signal electrode S are used for external and electric connection. The metallic conduction post is used for connecting the signal electrode and an electrode of a photoelectron integrated chip, thereby realizing signal transmission between the signal electrode and the electrode of the photoelectron integrated chip; and the matched resistor connected in series between the signal electrode S and the ground electrode G is connected in parallel with the photoelectron integrated chip to realize non-gold-wire impedance matching, thereby realizing impedance matching of a high-internal-resistance chip. According to the packaging structure, gold wire usage is avoided completely; and the influence on the device performance by a parasitic parameter introduced by the gold wire can be reduced. The packaging structure is suitable for packaging of single-channel or multi-channel integrated chips.
Owner:山东中科际联光电集成技术研究院有限公司

Electric connector

The invention relates to the technical field of connectors and provides an electric connector. The electric connector includes a connector body and a connection cap. The connector body includes a connector upper section and a connector lower section mounted together successively from left to right and having inner cavities. Each of the connector upper section and the connector lower section is provided with an isolation layer and an insulation layer from outside to inside successively. An elastic sleeve is fixed on the connection cap integrally. The left end of the connector upper section and the right end of the connector lower section are connected with the connection cap in a sealing manner through the elastic sleeve. The electric connector is reasonable and compact in structure. A flexible thread connection rod is arranged and a connection wire coils on the flexible thread connection rod, so that wire release is prevented effectively. A contact clamp end and a metal conduction rod of the flexible thread connection rod realize a good connection effect. The connector upper section and the connector lower section are in threaded connection, so that a sealing and thread-off proof effect is realized effectively. Through the buckling of a connection boss and a connection groove, the sealing effect is enhanced effectively.
Owner:SOUTHERN XINJIANG ELECTRICITY SUPPLY COMPANY OF STATE GRID XINJIANG ELECTRIC POWER +1

A new energy vehicle power supply adjustable heating sheet

The invention discloses a new energy vehicle power source controllable heating piece which comprises a doughnut-shaped metal frame. The outer lateral side of the doughnut-shaped metal frame is vertically welded with a fixed connection block, a fixed through hole is formed in the middle of the fixed connection block and penetrates the upper and lower faces of the fixed connection block, rotating columns are connected between the inner side walls of the doughnut-shaped metal frame in an inserted manner and are in a left-right symmetric state on the inner side walls of the doughnut-shaped metal frame, metal conduction pieces are welded between one ends, away from the doughnut-shaped metal frame, of the rotating columns, a metal contact hole is formed in one end of the side face of each metalconduction piece and penetrates the upper surface of the corresponding metal conduction piece to extend to the inside, one end, extending to the inside of the corresponding metal conduction piece, ofeach metal contact hole is welded with a heating lead, and a metal contact column is vertically welded on one side face, away from the corresponding metal contact hole, of each metal conduction piece.The device can cool a power source when the power source is too high in temperature during heating.
Owner:浙江仁丰科技有限公司

Semiconductor device, process for producing semiconductor device, semiconductor substrate, and process for producing semiconductor substrate

There is provided a semiconductor device that includes a III-V Group compound semiconductor having a zinc-blende-type crystal structure, an insulating material being in contact with the (111) plane of the III-V Group compound semiconductor, a plane of the III-V Group compound semiconductor equivalent to the (111) plane, or a plane that has an off angle with respect to the (111) plane or the plane equivalent to the (111) plane, and an MIS-type electrode being in contact with the insulating material and including a metal conductive material.
Owner:SUMITOMO CHEM CO LTD +3

Power transmission bus bar filling material

A filling material of power transmission bus bar, composed mainly of a silicone and an inorganic material, wherein weight ratio of said silicone and said inorganic material is between 1:0.1 and 1:9. As such, the resilience of the silicone can increase the buffering capability of said power transmission bus bar in facing pressure of strong winds; also stiffness of said inorganic material can increase the stability of said power transmission bus bar in a same situation. Said filling material of power transmission bus bar is able to protect metallic conduction element of said power transmission bus bar from getting in touch with moisture and dust, that may reduce its efficiency in transmitting power.
Owner:TAIWAN BUSWAY

3D printer nozzle heat dissipation device

The invention relates to the technical field of printer nozzle heat dissipation, and particularly relates to a 3D printer nozzle heat dissipation device. The technical problem that an existing heat dissipation device mainly conducts heat dissipation through metal conduction and fan blowing heat dissipation pieces, and the overall heat dissipation effect is not good enough is solved. In order to solve the technical problem, the 3D printer nozzle heat dissipation device is composed of an annular airflow dispersion mechanism and a locking device. Airflow makes contact with the surface of a conveying pipe, direct heat dissipation is conducted through rapid surging of the airflow, and heat is prevented from being accumulated on the conveying pipe. The active heat dissipation airflow is sprayed out through jet holes, secondary heat dissipation is conducted on heat conduction ring pieces again through the airflow, and the heat dissipation effect of the heat conduction ring pieces is improved. When the jet holes annularly formed in the surfaces of the heat conduction ring pieces at equal intervals spray the airflow, reverse thrust can be formed relative to a nozzle through the airflow in all the radial directions, accordingly, vibration of the nozzle in the using process is balanced, and the printing precision of a printer is effectively improved.
Owner:SHANDONG VOCATIONAL COLLEGE OF IND
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