37results about How to "Simple conversion method" patented technology

The invention provides a front pipe variable-angle shopping buddy bicycle, comprising a front frame pipe, a frame vertical pipe, a small frame telescopic main pipe, a large frame telescopic main pipe, a middle frame joint, a handlebar, a front fork, a hanger, a double support, a saddle, a saddle pipe, a front wheel, a back wheel, a shopping basket and the like, wherein, a hinge is arranged between the front frame pipe and the small frame telescopic main pipe and is fixed by a set fixed ring; a rack is arranged at the lower part of the small frame telescopic main pipe; a mandril is positioned at the upper part of the large frame telescopic main pipe, a gear wheel is arranged in the lower part of the large frame telescopic main pipe and a handle is arranged on the gear wheel; the rack is meshed with the gear wheel; two universal wheels are positioned on one end of the double support and form a shopping travelling system with the front wheel together; the front fork is provided with a location hole, and a location rod corresponding to the location hole is arranged on the middle frame joint; and the location hole coincides with the location rod so that the front wheel can rotate but not swing. The front pipe variable-angle shopping buddy bicycle has the advantages of multiple purposes and practicability, being a bicycle as well as a shopping trolley and simple, rapid and convenient conversion from the bicycle to the shopping trolley.

The invention provides a travel companion-bicycle, comprising a handle bar, a front fork, a clothes rack, a double bracket, a saddle, a saddle tube, a front wheel, a rear wheel, a shock absorber, transmission chains and the like; the bicycle is also provided with a frame constituted by a front frame tube, a front ear tube, an upper frame tube, a lower frame tube, an upper frame fork, a lower frame fork and the like; the end part of the upper frame tube is provided with an A double-spindle hinge, one of the spindle is connected with the front ear tube and the other spindle is connected with the saddle tube; the lower frame tube is provided with a B single-spindle hinge; a C single-spindle hinge is arranged between the lower frame tube and the front frame tube; a D single-spindle hinge is provided with the upper frame fork and the lower frame fork; the four hinges of A, B, C and D rotate synergistically, so as to enable the frame and the saddle base to be folded; and two rotating wheels are arranged at the end part of the double bracket. The invention has the advantages multipurpose and utility; the invention can be used as a bicycle and a bicycle for pulling objects; the switching method from riding to pulling is simple and rapid; and during the switching from riding to pulling, the carried luggage and objects need not to be shifted.

The invention discloses an R-test precision ball head detection device, which comprises a five-dimensional manual sliding table, an R-test ball head and a mounting seat, wherein the mounting seat is provided with three mounting surfaces for mounting sensors, and a reference surface A and a reference surface B for calibration, the mounting seat is fixedly mounted on the top surface of the five-dimensional manual sliding table, displacement sensors are fixedly mounted on the mounting surfaces of the mounting seat, the extension lines of the three displacement sensors are orthogonal to a point P,and the center of sphere of the R-test ball head is located at the point P. According to the invention, by arranging the mounting seat with the reference surface A and the reference surface B, afterthe sensor is mounted, the detection device can be calibrated, so that the positioning error when the R-test detection device is mounted and positioned on the workbench of the processing machine toolis reduced, the detection result of the volume error is accurate and reliable, and the direction vector of the axis of the R-test sensor can be directly obtained so as to simplify the conversion method of the subsequent volume error in each coordinate system and provide convenience for geometric error identification.

A device and a method for controlling basal heating in a chemical gaseous phase sedimentary chamber are particularly suitable for a metal organic chemical vapor deposition (MOCVD) reaction chamber. The device comprises a heater located in the chamber, a tray, a first temperature control unit, a second temperature control unit and a heater, wherein the tray is located close to the heater in the chamber, separated from the heater at intervals and used for loading a base, the first temperature control unit is coupled with the surface of the tray for loading the base, used for measuring the temperature of the surface of the tray and outputting a first control signal based on set temperature and the temperature of the surface of the tray, the second temperature control unit is connected with the first temperature control unit, used for measuring the middle temperature of the area between the tray and the heater and further used for outputting a second control signal according to the first control signal and the middle temperature, and the heater is coupled with the second temperature control unit and used for performing heating according to the second control signal. Correspondingly, the invention further provides the method for controlling the basal heating in the chemical gaseous phase sedimentary chamber. The device and the method for controlling basal heating in the chemical gaseous phase sedimentary chamber can obtain stable basal temperature.

The invention discloses a draw-bar box type electric vehicle which comprises a handlebar, a front fork, a front wheel, a coaxial electromotor rear wheel, a battery, a controller and a herringbone frame composed of a frame front pipe and a frame rear pipe, wherein a pedal vertical pipe is arranged at the lower part of the frame front pipe; a pedal transverse pipe is arranged at the lower end of the pedal vertical pipe; a folding plate is arranged between the frame rear pipe and the frame front pipe, and is fixedly connected with the frame front pipe and movably connected with the frame rear pipe through a rotation shaft; a positioning shaft is arranged in an elongated slot of the frame rear pipe and controlled by a tension spring; a fixed rear fork piece is arranged at the lower part of the frame rear pipe; rotatable double brackets are arranged on the rear fork piece, and small wheels are arranged on the double brackets; a saddle capable of rotating around a rotation pin is arranged above the frame rear pipe, and supported by an upper support section and a lower support section; and two bags are fixed on the two sides of the frame rear pipe. The draw-bar box type electric vehicle disclosed by the invention has a simple structure, is stable, reliable, multifunctional and practical and is an electric vehicle and a draw-bar box, and can be used for realizing simple and quick function switching.

The present invention provides a security assessment method for an AADL model based on deterministic stochastic Petri nets. The method comprises: building an AADL architecture model of a hierarchicalstructure; then, developing a new model transformation method to transform the AADL security model into a DSPN model, and adding new semantics, including a relationship between an operational state ina composite component and a failure state, a relationship between the operational state and the hazard, and a relationship between a recovery event and a repair event, and error detection, to the AADL security model, wherein the new model transformation method is a transformation method for simplifying error propagation between components and the transformation method for simplifying dangerous behaviors, so that the security model is transformed into a DSPN model with a smaller number of states to calculate the probability of the hazard; and finally, in combination with the severity level ofthe hazard, calculating the risk of the hazard, and performing security assessment.

Provided are a method and system of equivalently transforming Markov network into factor graphs, wherein the method comprises the following steps: inputting Markov network which is to be transformed into factor graphs; equivalently transforming Markov network into factor graphs, according to transformation rule 1,2,3 in sequence; and outputting the transformed factor graphs. And the transformation rule 1 is establishing all the variable nodes of factor graphs which respectively correspond to all the random factor nodes of Markov network; the transformation rule 2 is establishing all the factor nodes of factor graphs called local function, which respectively correspond to all the biggest mission style function in Markov network; and the transformation rule 3 is if and only if a certain variable in the factor graphs is a variable in the local function, undirected edges can be added to link the variable node and local function. The method and system of equivalently transforming Markov network into factor graphs have the advantages of overcoming the defects that Markov network currently lacks completeness and enforceable technical scheme in the process of equivalently transforming Markov network into factor graphs, being simple and easy to utilize and being wide in application.

The present invention relates to a method for obtaining isoxazole and aromatic nitrile from a lignin model and pre-oxidized birch lignin. The method is characterized in that hydroxylamine hydrochloride and a beta-O-4 model compound containing ketone in the benzyl position, which are used as reaction substrates, undergo oximation condensation Cbeta-O bond fracture under the action of magnesium andother additives to prepare the isoxazole compound, and undergo oximation rearrangement Calpha-Cbeta bond fracture the action of magnesium and other additives to prepare the fragrant nitrile compound.The method can be applied to the conversion of pre-oxidized lignin into the isoxazole and aromatic nitrile. The preparation method comprises the following steps: mixing the beta-O-4 model compound orpre-oxidized birch lignin, hydroxylamine hydrochloride and the additives in an alcohol solvent, adding the obtained mixture into a pressure-resistant container, replacing air in the container with nitrogen, sealing the container, and stirring the mixture at 120 DEG C for 8-12 h to obtain the products isoxazole and aromatic nitrile. The method realizes the obtaining of nitrogen-containing compoundssuch as isoxazole and aromatic nitrile from lignin for the first time, and the reaction process is simple and controllable, and is easy to operate.

The invention discloses a circular shopping buddy bicycle, which comprises a frame front tube, a frame riser, a frame middle joint, a handlebar, a front fork, a rack, double brackets, a saddle, a saddle tube, a front wheel, a rear wheel, a shopping basket and the like, wherein a circular A tube and a circular B tube are arranged between the frame front tube and the frame riser; the A tube is sleeved in the B tube, and the A tube and the B tube are movably connected; a rack is arranged on the lower part of the A tube, a gear is arranged on the lower part of the B tube, a handle is arranged on the gear, and the handle is shaken to drive the A tube to slide in the B tube; the end parts of the double brackets are provided with two universal wheels, and the universal wheels and the front wheel form a shopping walking system together; and the front fork is provided with a positioning hole, the frame middle joint is provided with a positioning rod, the positioning hole can be matched with the positioning rod so that the front wheel only can rotate but cannot swing. The circular shopping buddy bicycle has the advantages that the bicycle is multifunctional and practical and can be used as a bicycle and a shopping vehicle. A method for converting the bicycle to the shopping vehicle is simple, rapid and convenient; and the circular shopping buddy bicycle can be easily operated by men and women, old and young people.

A rhomboid shopping buddy bicycle comprises a handlebar, a front fork, a front fork riser, clothes hangers, a double bracket, a saddle, a saddle tube, a front wheel, a rear wheel, a transmission chain, a shopping basket and the like. A rhomboid similar frame is added, which is composed of a frame front tube, a frame riser, a frame upper tube, a frame lower tube and the like; the frame is providedwith four hinges which are in synergic rotation and can enable the frame to be folded; the end parts of the double bracket are respectively provided with a universal wheel, and the two universal wheels and the front wheel form a shopping traveling system jointly; the end part of the frame lower tube is provided with a positioning snap spring, an A positioning slot and a B positioning slot which are capable of being inserted by the positioning snap spring are arranged at the positions of the front fork riser and the frame front tube corresponding to the positioning snap spring, and when the positioning snap springs are inserted in the A positioning slot and the B positioning slot, the front wheel in the front wheel can only be enabled to rotate rather than to swing. The invention has the advantages of multiple uses and practicability, and is a bicycle as well as a shopping cart, and the method for switching between the bicycle and the shopping cart is simple, rapid and convenient.

The invention relates to a method for converting farm wastes and monosodium glutamate wastewater into a liquid compound fertilizer. The method comprises the following steps: separating the farm wastes to obtain wastewater and waste residues; filtering the wastewater to obtain filtrate and filter residues; and mixing the waste residues with the filter residues uniformly to obtain a compost material, performing composting fermentation, adding the filtrate, the monosodium glutamate wastewater and an additive into an obtained base fertilizer, and then mixing the materials uniformly to obtain the liquid compound fertilizer, wherein the additive comprises calcium oxide, a boron fertilizer, iron, magnesium, an ethylenediamine tetraacetic acid (EDTA) zinc disodium salt hydrate and EDTA manganese disodium salt hydrate. The conversion method provided by the invention can achieve recycling of livestock and poultry breeding wastes, and provides a raw material source for preparing a compound fertilizer for improving saline-alkali soil; the conversion method is simple, is easy to control, and can avoid nitrogen loss and improve the nutrient content of the fertilizer at the same time; and the conversion method ensures that the pH value of the prepared compound fertilizer is in line with an industry standard, and the prepared compound fertilizer can reduce the pH value and salt content of the saline-alkali soil, and improve the germination rate and plant height of a plant.

The invention discloses a method for traffic information transfer among maps of different granularities and belongs to the field of intelligent traffic. The method comprises the steps that a road section set in a processed road network corresponding to road sections in an issued road network is obtained; a covering mileage ratio of each road condition in the road section set is counted; road conditions of the road sections in the issued road network are determined according to the covering mileage ratios of different road conditions, so that traffic information transfer among the maps of the different granularities is accomplished. The simple, efficient and accurate method for traffic information transfer is provided for the issued road network of the city road conditions, the accuracy of traffic information is improved, and the conditions that a transfer result shows that the road sections are jammed and the transfer result deviates from original road conditions are avoided.

The invention discloses a preparation method for an avian pasteurella genome vaccine. The preparation method comprises the following steps of: performing enzyme digestion on a target gene by using a restrictive incision enzyme Sau3AI; performing enzyme digestion on an eucaryon expression vector PcDNA 3.1(+) by using a restrictive incision enzyme BamHI; performing dephosphorylation on the eucaryonexpression vector PcDNA 3.1(+) which is subjected to enzyme digestion by using calf intestinal alkaline phosphatase; connecting an avian pasteurella genome with the eucaryon expression vector pcDNA3.1(+); transform into a colon bacillus competence JM83; extracting plasmids; and identifying through enzyme digestion to obtain the avian pasteurella genome vaccine. As proved by animal experiment detection, the avian pasteurella genome vaccine prepared with the method can be used for reducing the generation of avian pasteurellosis and reducing the invasion of avian pasteurella to birds; and the preparation method is simple and is easy to operate.

Provided are an apparatus and a method for controlling the heating of the base within a chemical vapour deposition chamber, which apparatus is applicable to an MOCVD reaction chamber. The apparatus comprises a heater located within a chamber; a tray located near the heater within the chamber and spaced apart from the heater and used for carrying the base; a first temperature control unit coupled with a surface of the tray for carrying the base and used for measuring the temperature of the tray surface and outputting a first control signal as a function of a set temperature and the temperature of the tray surface; and a second temperature control unit connected to the first temperature control unit and used for measuring the temperature of the middle of the area between the tray and the heater, and also for outputting a second control signal as a function of the first control signal and the temperature of the middle, with the heater being coupled with the second temperature control unit to heat according to the second control signal. Further provided is a method for controlling the heating of the base within a chemical vapour deposition chamber. A steady base temperature can be obtained via the apparatus.

The invention relates to a high-precision simple A / D converting circuit and a method based on MSP430. The invention adopts the P2.0 port of the MSP430 to be externally connected with a resistor and a capacitor which are serially connected; the other end of the resistor is connected with the P2.3 port of the MSP430, the other end of the capacitor is connected to the power supply ground. An analog signal is connected to the P2.4 pin of MSP430F1121 to form a sigma-delta resembling type single-slope A / D converter. The conversion method is realized by that a half of the total count value N / 2 is loaded at first, and whether the output of a comparator is high level is determined, if yes, the P2.0 outputs low level; if not, the P2.0 outputs high level; the count value of the high level adds 1, the total count value N / 2 deducts 1, whether the total count value N / 2 is 0 is judged, if not, then the step is skipped previous, if yes, the P2.3 and the P2.4 pins are exchanged internally, and then the measurement sub-program is over. The invention solves the problem that the over-sampling sigma-delta conversion is applied due to the characteristic of high resolution, but the over-sampling sigma-delta conversion has complex structure, large volume, and hard operation. The invention achieves the effects that the conversion method is simple, the circuit structure is simplified, the volume is small, the cost is low, and the method can be easily implemented.

The invention discloses a DNA protective agent and a DNA sulfite conversion method, and relates to the technical field of DNA methylation state analysis and detection. The DNA protective agent comprises hydroquinone, dimethyl sulfoxide and a DNA anti-degradation agent, and the DNA anti-degradation agent is glucomannan and / or arabic gum. The DNA protective agent can obviously reduce damage to DNA in the transformation process, avoid DNA degradation and maintain the integrity of the DNA. Besides, the high conversion rate of the non-methylated cytosine can be realized to a great extent, and the melting temperature of the DNA can be reduced to a great extent, so that the high-temperature denaturation time is indirectly shortened, and the problems of breakage and degradation caused by high-temperature damage of the DNA are solved.

The invention discloses a preparation method for an avian pasteurella genome vaccine. The preparation method comprises the following steps of: performing enzyme digestion on a target gene by using a restrictive incision enzyme Sau3AI; performing enzyme digestion on an eucaryon expression vector PcDNA 3.1(+) by using a restrictive incision enzyme BamHI; performing dephosphorylation on the eucaryon expression vector PcDNA 3.1(+) which is subjected to enzyme digestion by using calf intestinal alkaline phosphatase; connecting an avian pasteurella genome with the eucaryon expression vector pcDNA3.1(+); transform into a colon bacillus competence JM83; extracting plasmids; and identifying through enzyme digestion to obtain the avian pasteurella genome vaccine. As proved by animal experiment detection, the avian pasteurella genome vaccine prepared with the method can be used for reducing the generation of avian pasteurellosis and reducing the invasion of avian pasteurella to birds; and the preparation method is simple and is easy to operate.

The invention discloses a novel isopentenyl flavonoid compound, which is prepared by adopting the following steps: (1) taking Epimedium medicinal materials, pulverizing or not pulverizing, and extracting 1-3 times with a solvent, extracting 0.2-3 times each time After 3 hours, the two extracts were combined and concentrated under reduced pressure to obtain an extract; (2) water was added to the extract to obtain a suspension, the suspension was separated by gradient elution of macroporous resin, and then passed through an ODS column Gradient elution separation was performed, and finally the prenyl flavonoids were purified by high performance preparative liquid phase. The isopentenyl flavonoids can be converted into icariin under the conditions of heating, acid treatment, enzyme treatment, alkali treatment and the like. The invention is easy to operate, and the prepared compound has high purity.

The invention relates to a hollow molecular sieve fiber and a preparation method thereof. The external diameter of the hollow molecular sieve fiber is 1-30 mu m, the internal diameter is 0.5-20 mu m, the length-diameter ratio is 20:1-1000:1, and the specific area is 350-700 m<2> / g. The preparation method comprises the following steps: attaching a small amount of molecular sieve crystal seed to a solid silicon-oxygen-containing fiber used as a silicon source; and by using a steam reforming process, generating a molecular sieve film layer on the solid fiber surface, growing the molecular sieve microcrystal in the normal direction of the molecular sieve film surface, and finally, gradually emigrating the silicon source from inside to form the hollow fiber. The method is suitable for preparing ZSM-5-type, beta-type, Y-type, titanium-silicon-type and other molecular sieves. The preparation method is simple; and the product has the advantages of high purity, complete structure and high mechanical strength, and is suitable to be used as a film separation material or a catalyst for catalytic reaction.

The invention relates to an X-type shopping mate bicycle which comprises an X-type frame A tube, an X-type frame B tube, a frame front tube, a handle bar, a front fork, a front fork upright tube, a clothes rack, a double-bracket, a front wheel, a rear wheel, and the like, wherein a fixed shopping basket is arranged on the clothes rack, and two universal wheels are arranged at the end part of the double-bracket. When the bicycle is used as a shopping cart, the two universal wheels and the front wheel are in contact with the ground, which jointly forms a shopping traveling system; positioning clamping springs are arranged at the end part of the X-type frame A tube, and the front fork upright tube and the frame front tube are respectively provided with an A positioning slot and a B positioning slot in which the positioning clamp springs can be inserted corresponding to the positioning clamp springs; and when the positioning clamping springs are inserted into the A positioning slot and the B positioning slot, the front wheel can rotate, but can not swing, therefore, the direction can be controlled in an ordered way by means of the universal wheels when the bicycle is pushed as the shopping cart. The invention is multipurpose and practical, not only can be used as the bicycle, but also can be used as the shopping cart, has simple, fast and convenient conversion method between the bicycle and the shopping cart and can be freely operated by all people regardless of age and sex.

The invention discloses a method for traffic information transfer among maps of different granularities and belongs to the field of intelligent traffic. The method comprises the steps that a road section set in a processed road network corresponding to road sections in an issued road network is obtained; a covering mileage ratio of each road condition in the road section set is counted; road conditions of the road sections in the issued road network are determined according to the covering mileage ratios of different road conditions, so that traffic information transfer among the maps of the different granularities is accomplished. The simple, efficient and accurate method for traffic information transfer is provided for the issued road network of the city road conditions, the accuracy of traffic information is improved, and the conditions that a transfer result shows that the road sections are jammed and the transfer result deviates from original road conditions are avoided.

The present invention provides a kind of active remote sensing satellite antenna phase center coordinate system conversion method and system, obtain the vector of satellite GNSS antenna phase center under WGS84 coordinate system by GNSS (Global Navigation Positioning System) observation data processing; According to the ground measurement, get the satellite The line vector between the GNSS antenna phase center and the active remote sensing antenna phase center in the body coordinate system; calculate the coordinate transformation matrix from the satellite body coordinate system to the WGS84 coordinate system; calculate the vector of the satellite active remote sensing antenna phase center in the WGS84 coordinate system. The method for converting the active remote sensing satellite antenna phase center coordinate system of the invention is a key step in the precise image processing of the active remote sensing satellite.

The invention relates to a method for obtaining isoxazole and aromatic nitrile from lignin model and preoxidized birch lignin. The method adopts the β-O-4 model compound whose benzyl position is a ketone and hydroxylamine hydrochloride as the reaction substrate, and under the action of additives such as magnesium oxide, the C β ‑O bond preparation of isoxazole compounds, and oximation rearrangement cleavage of C α -C β At the same time, this method can be applied to the conversion of preoxidized lignin to isoxazoles and aromatic nitriles. The preparation process is as follows: mix the β-O-4 model compound or pre-oxidized birch lignin, hydroxylamine hydrochloride and additives in an alcohol solvent, put it in a pressure-resistant container, replace it with nitrogen and seal it, at 120 ° C, stir After 8-12 hours, isoxazole and aromatic nitrile products can be obtained. This method is the first to realize nitrogen-containing compounds such as isoxazole and aromatic nitrile from lignin, and the reaction process is simple, controllable and easy to operate.

The invention provides a method for evaluating the safety of the AADL model based on the deterministic random Petri net. Firstly, build a hierarchical AADL architecture model; then, formulate a new model transformation method to transform the AADL security model into a DSPN model, in which new semantics are added to the AADL security model, including the operational state in composite components Respectively with the relationship between failure state and danger, and the relationship between recovery event and repair event and error detection, the new model transformation method simplifies the transformation method of error propagation between components and the transformation method of dangerous behavior, making the security The model is converted to a DSPN model with a smaller number of states, which is used to calculate the probability of danger occurrence; finally, the risk of danger occurrence is calculated in combination with the severity level of danger for safety assessment.

The invention provides a travel companion-bicycle, comprising a handle bar, a front fork, a clothes rack, a double bracket, a saddle, a saddle tube, a front wheel, a rear wheel, a shock absorber, transmission chains and the like; the bicycle is also provided with a frame constituted by a front frame tube, a front ear tube, an upper frame tube, a lower frame tube, an upper frame fork, a lower frame fork and the like; the end part of the upper frame tube is provided with an A double-spindle hinge, one of the spindle is connected with the front ear tube and the other spindle is connected with the saddle tube; the lower frame tube is provided with a B single-spindle hinge; a C single-spindle hinge is arranged between the lower frame tube and the front frame tube; a D single-spindle hinge is provided with the upper frame fork and the lower frame fork; the four hinges of A, B, C and D rotate synergistically, so as to enable the frame and the saddle base to be folded; and two rotating wheelsare arranged at the end part of the double bracket. The invention has the advantages multipurpose and utility; the invention can be used as a bicycle and a bicycle for pulling objects; the switching method from riding to pulling is simple and rapid; and during the switching from riding to pulling, the carried luggage and objects need not to be shifted.

The invention discloses a novel isopentenyl flavonoid compound which is prepared by the following steps: (1) taking herba epimedii, crushing or not crushing, extracting with a solvent for 1-3 times, extracting for 0.2-3 hours each time, combining extracting solutions obtained by two times, and concentrating the extracting solutions under reduced pressure to obtain extract, and (2) adding water into the extract to prepare a suspension, carrying out gradient elution separation on the suspension by using macroporous resin, carrying out gradient elution separation by using an ODS column, and finally purifying the isopentenyl flavonoid compound by using an efficient preparative liquid phase. The isopentenyl flavonoid compound can be converted into icariin under the conditions of heating, acid treatment, enzyme treatment, alkali treatment and the like. The method is simple and convenient to operate, and the prepared compound has high purity.

The present invention relates to a production process of converting waste polystyrene and other waste plastic directly into paint. Waste plastic, ethanol and acetone in the weight rati oof 6-7 to 1.5-2 to 1.5-2 are mixed with stirring, and deposited and separated to eliminate impurity to prepare paint. During the production, the mixture may be heated to shorten the convension period. The said process can produce paint at low cost and converting waste into useful material to protect environment.

The invention relates to a genetically engineered strain efficiently expressing alpha-transglucosidase. A host bacterium of the genetically engineered strain is aspergillus niger, and the genetically engineered strain comprises an alpha-transglucosidase gene expression cassette. A genetically engineered bacterium can efficiently express alpha-transglucosidase, and improves the secretion efficiency of alpha-transglucosidase. In addition, alpha-transglucosidase is secreted to the outside of a cell, so that the cost of alpha-transglucosidase extraction purification is lowered, industrial materials are saved, the production cost is lowered, and the genetically engineered strain has an obvious social benefit. The enzyme activity of a crude enzyme obtained after the strain is fermented is improved by 4.0-12.1 times in comparison to a starting strain; a foundation is laid for an application of alpha-transglucosidase in the food industry and industrial production; a bottleneck that alpha-transglucosidase depends on import is broken; and the genetically engineered strain has huge economic and social benefits, and has a broad market development prospect.