51results about How to "Achieve organic unity" patented technology

The invention relates to a seaweed fertilizer comprising a seaweed leach liquor. The seaweed fertilizer is prepared by the following steps: (1) seaweed extraction; (2) preparation of a fermentation medium; (3) inoculation and fermentation. The seaweed fertilizer provided by the invention is an active biological fungicide fertilizer of seaweed produced by pure physical and biological methods, and has the activity of seaweed and the living body adjusting function of biological fungicide. The number of effective living bacteria is greater than or equal to 2.0*10 to the power of 9 CFU / ml. Meanwhile, the fertilizer is rich in plant growth-regulating activity substances such as alginic acid, seaweed oligosaccharide, gibberellin (GA) and indoleacetic acid (IAA) biologically fermented, degraded and converted from seaweed gel. The fertilizer is directly absorbed by root systems of crops conveniently and fast in fertilizer efficiency, and can effectively accelerate high yield and early-ripe of plants, enhance the disease-resistance and improve the quality of crops, so that the fertilizer is an excellent special fertilizer for organic food.

The invention relates to a flow cutoff control device with a memory function and a flow cutoff control method thereof. The flow cutoff control device is used for carrying out automatic precise control based on a PLC (Programmable Logic Controller) system and consists of an intelligent control box, a driving device, an electric gate and a water level gauge, wherein an input terminal of the intelligent control box is connected with the water level gauge, an output terminal of the intelligent control box is connected with the driving device, the driving device is connected with the electric gate so as to drive the opening / closing of the electric gate, and the water level gauge, a flowmeter and an online water quality detector can be used separately or in a cooperated manner and are mounted according to specific regional implementation circumstances. When a signal is detected by the water level gauge, the signal is fed back to the intelligent control box, a command signal is sent out after the signal is subjected to conversion, analysis and calculation in the intelligent control box, the run / stop of the driving device is automatically controlled by the PLC system of the intelligent control box according to the feedback signal, and then, the electric gate is driven to open / close by the driving device, so that the size of cutoff flow can be controlled accurately, thus, the pollution to environment is reduced, and rainwater, which reaches use standards after flow cutoff, can be subjected to resource utilization.

The invention discloses flash spinning equipment. The equipment comprises a box, a spinning nozzle, a steering board and a conveying device, wherein a spinning solution inlet is formed in one side ofthe box, the spinning nozzle is arranged on the spinning solution inlet, the steering board is arranged on the other side of the box and opposite to the spinning nozzle, and the conveying device is arranged on the bottom of the box; the equipment further comprises an air amplifier, the air amplifier is arranged between the steering board and the conveying device, and high-pressure air with a fiberbundle led out by the steering board enters from a compressed air inlet of the air amplifier. The invention further discloses a spinning method of the flash spinning equipment. The method comprises the following steps that a spinning solution is sprayed from the spinning nozzle to form the fiber bundle, by means of the air amplifier, secondary drafting is conducted on the fiber bundle, and even splitting is conducted to form a fiber web. According to the equipment and the method, by adopting the air amplifier to replace traditional electrostatic apparatus for fiber splitting, the effect thatthe equipment and the method are more energy-saving and safer is achieved, the diameters of obtained fibers are small, and the strength is high.

The invention relates to a plain area urban river network water circulation regulation and control method based on an ecological restoration target, and the method comprises the steps: building a water volume-hydrodynamic force-water quality-water ecological index system through the investigation of the basic conditions of an urban river network and taking the aquatic organism diversity as the basic target of the urban river network water ecological restoration; constructing a river network hydraulics-water quality-water ecology refined simulation model, optimizing a flowing water engineeringregulation and control scheme by utilizing a hydrodynamic force-water quality simulation result of each scene scheme, constructing an urban river network large circulation system, and adjusting a section structure of a local end river segment to realize local small circulation; and comprehensively evaluating the flood control safety, the environment improvement benefit and the influence on the water supply source of the regulation and control scheme. Under an existing engineering system, a flowing water source and kinetic energy of the flowing water source are fully utilized, dispatching of hydraulic engineering such as gates and pumps serves as a main way, ordered movement of inland river water flow is promoted, and the inland river self-cleaning capacity is recovered and improved.

The invention relates to a multi-functional hotel management system, comprising a server, a hotel integrated service application platform and a hotel integrated management application platform, wherein, the hotel integrated service application platform comprises a room reservation module, an intelligent unlocking module, a room service module and an additional service module. The hotel integratedmanagement application platform includes the idle guest room management module, the standby guest room management module, the intelligent lock management module, the additional service management module and the big data analysis module. When the server's source information changes, directional distribution takes place, to ensure that no matter what medium a customer uses to book a room, no room oversold will occur. At the same time, through the cooperation of additional service module, room reservation module, intelligent unlocking module, server, intelligent lock management module and so on,the organic unity of hotel security management and self-service check-in is realized, and the omni-directional ordering demand of customer travel is satisfied.

The disclosed synergetic system and method among mobile phone, computer and synchronous server comprise: applying SyncML protocol for data exchange; when connecting phone and computer, taking phone and computer as client and service terminal respectively; when connecting computer and synchronous server, taking phone and the background as client and service terminal respectively; when connecting phone and synchronous server, taking phone and the server as client and service terminal respectively. This invention integrates these three even more devices, ensures data consistency, and reduces user maintenance workload.

The invention discloses a method for quickly improving the soil aggregate content through biomass ash. A vegetable field with the slope smaller than 10 degrees is selected, and organic fertilizer is applied 800 kg / mu before crop sowing to serve as base fertilizer; the biomass ash is evenly applied 1200 kg / mu two days later, and then soil is ploughed with the ploughing depth of 20 cm; it is guaranteed that the soil moisture content is not smaller than 45% seven or more days, and then crops can be planted. In the method, engineering development on land is not needed; the method is easy to implement, operation is easy, raw materials are easy to get, cost is low, and the aggregate amount can be improved within a short period of time which is mainly embodied in the aspects of improving the water-stable aggregate amount, soil porosity and soil water retention capacity. By quickly improving the soil aggregate content through the biomass ash, ecological and economical benefits can be achieved.

The invention provides a three-dimensional topology-considered underground working well facility modeling method. The method comprises the following steps of: carrying out point cloud simplification;extracting a main shaft of a point cloud of a working well; rotating an original point cloud to ensure that the original point cloud stands in a three-dimensional space along the direction of the mainshaft; constructing a triangular patch to realize simple modeling of a working well model: a) extracting a point cloud on the top surface of the working well and carrying out plane fitting, b) extracting a point cloud on the bottom surface of the working well and carrying out plane fitting, c) constructing the triangular patch according to a boundary line on the top surface, a boundary line on the bottom surface and a height between the top surface and the bottom surface so as to carry out simple modeling which fits point cloud data; and constructing working model components. The method can be adapted to multiple point cloud types and is strong in algorithm adaptability; the model fits practical point clouds is good in quality; and compared with common curved surface reconstruction algorithms, the method is high in model construction speed and strong in practicability, and is capable of realizing organic unification between internal pipelines and external point clouds and better satisfy reproduction of practical scenes.

The present invention discloses a textile enterprise environmental monitoring system and method. The system comprises an environment data detection device, an environment data fusion device, a remote monitoring device and a terminal device which are connected in order. The environment data detection device is configured to collect various environment data and send the environment data to the environment data fusion device for the fusion of a data layer, a feature layer and a decision layer so as to obtain accurate measurement and integrated decision of the textile enterprise environment state parameters. The remote device is configured to automatically regulate the operation parameters of an air conditioner and a deduster in a terminal device according to the integrated decision of the environment data fusion device. When the environment state exceeds a setting threshold, the remote monitoring device is configured to send the environment information to a mobile phone on duty through a 4G network. The remote monitoring device is configured to construct a database in the environment data storage of the terminal device, and according to the database, the environment state is tracked in real time, the cause and the rule of the environment pollution are comprehensively analyzed, the safety state of the environment is assessed, the early warning is timely performed and the environment pollution is eliminated.

The invention provides a non-differential and non-combination PPP positioning method based on double constraints of ionized layer delay prior information and ionized layer spatial variation information. Based on an ionized layer space change structure, namely the statistics of ionized layer delay space correlation and variability information, an ionized layer grid with high precision and high resolution is obtained by adopting a Kriging space interpolation method, accurate ionized layer delay prior correction information is provided, meanwhile, proper time domain constraint information is added, non-differential and non-combined PPP (IC-PPP) positioning calculation is performed, and the problems of ionized layer delay correction precision in the non-differential and non-combined PPP and improvement of initial positioning precision domain and convergence speed are effectively solved.

The invention discloses PPS (polyphenylene sulfide) flashing equipment. The equipment comprises a box, a spinning nozzle, a high-pressure reactor and a conveying device, wherein a spinning solution inlet is formed in the box, the spinning nozzle is arranged in the box, the bottom end of the high-pressure reactor is connected with the spinning nozzle through the spinning solution, and the conveyingdevice is arranged at the bottom of the box. The equipment also comprises an adjusting valve and an interceptor which are sequentially arranged above the spinning nozzle. Besides, the invention discloses a flash spinning method of PPS. A PPS polymer and a flash spinning process are combined for the first time to produce PPS flashed non-woven fabric, and fine-fiber and high-strength PPS non-wovenfabric is formed.

The invention discloses an embedded multi-core operating system scheduling method and a scheduling device, electronic equipment and a storage medium, and the scheduling method comprises the steps: triggering periodic task scheduling through timer clock interruption, enabling a basic scheduling strategy of time-sharing parallel and multi-priority management of multiple tasks to trigger real-time preemption of a key task through external interruption; providing a mechanism for time-sharing scheduling of a plurality of partition microcores, and supporting a priority-based round-robin task scheduling mechanism in the microcores. According to the method, system task scheduling with high timeliness requirements is completed, multi-task security isolation parallel data processing is also completed, multi-task space isolation is ensured, and the security and reliability of the system are improved.

The invention discloses a cohesion-magneto-mechanical coupling model-based interface crack evaluation method. According to the method, the traction force and magnetic mechanical effect of the cohesionunit of a coating interface are combined, so that a cohesion-magnetic mechanical coupling model is established; the initial opening displacement of the cohesion unit is obtained through finite element simulation; fitting relationships between a magnetic field intensity threshold value, the maximum magnetic field growth speed of the cohesion unit and crack propagation speed during the growth of the fatigue crack of the interface are calculated through the cohesion-magnetic mechanical coupling model on the basis of the initial opening displacement; and the maximum magnetic field intensity of acquired self-generated magnetic signals at the interface is compared with the magnetic field intensity threshold value, so that whether the crack grows can be judged; the crack propagation speed of theinterface under the action of different fatigue circulation cycles and the crack propagation length of the interface during the fatigue service process of a coating can be obtained according to the fitting relationships. With the method of the invention adopted, the evolution behavior of the fatigue crack of the coating interface can be accurately evaluated.

The invention relates to liquid microbial fertilizer for preventing fungal diseases of tomatoes and a preparation method of the liquid microbial fertilizer. The liquid microbial fertilizer is prepared from the following raw materials in parts by weight: 5 to 25 parts of streptomycs micuoflaudio-videous fermentation solution, 3 to 12 parts of calcium silicate, 5 to 17 parts of magnesium sulfate heptahydrate, 0.5 to 1.5 parts of iron sulfate, 0.3 to 1.0 part of borax, and 0.3 to 0.5 part of zinc sulfate. The preparation method comprises the following steps: preparing a seaweed extract solution by virtue of ultrasonic co-enzymolysis, then preparing the prepared seaweed extraction solution into a fermentation culture medium, culturing streptomycs micuoflaudio-videous under a given condition, and finally compounding the fermentation solution and medium-trace elements to obtain the liquid microbial fertilizer. The liquid microbial fertilizer prepared by the invention not only can effectively increase the utilization rate of the fertilizer, and promote the absorption, transshipment and application of tomato nutritional substances, but also can improve the disease resistance of the tomato, can prevent the fungal disease, improve the quality of the tomatoes and increase the yield of the tomatoes, and is pure natural pollution-free fertilizer integrating nutrition, yield increase and disease resistance.

The invention relates to a liquid microorganism fertilizer for preventing and controlling fungal disease of cucumber and a preparation method thereof. The liquid microorganism fertilizer is prepared from the following raw materials in parts by weight: 50 to 100 parts of streptomyces microflavus fermenting liquid, 60 to 80 parts of calcium carbonate, 10 to 40 parts of magnesium sulfate, 0.5 to 1 part of borax, 0.5 to 1 part of ferrous sulfate, 0.1 to 0.5 part of manganese sulfate, 0.001 to 0.01 part of zinc sulfate, 0.001 to 0.007 part of copper sulfate, and 0.001 to 0.005 part of ammonium molybdate. The preparation method comprises the following steps of performing ultrasonic-assisted enzymolysis to prepare an algae extracting liquid; preparing the prepared algae extracting liquid into a fermenting culture medium; under the certain conditions, culturing streptomyces microflavus; finally, compounding with the fermenting liquid and medium and trace elements, so as to prepare the liquid microorganism fertilizer. The liquid microorganism fertilizer has the advantages that the formula is scientific and reasonable, the complete and rich nutrients are contained, the growth and development requirements of the cucumber are met, the disease-resistant property of the cucumber is effectively improved, the fungal disease is prevented and controlled, the quality of the cucumber is improved, the output of the cucumber is increased, the safety in eating is improved, and the significant meaning is realized for promoting the development of green agriculture and production of green products.

The invention discloses an adhesive, a preparation method thereof, a silicon-carbon negative electrode material and a lithium battery, the adhesive is a multi-block amphiphilic copolymer, organic unification of a hydrophobic polymer and a hydrophilic polymer is realized by copolymerizing polystyrene and polyacrylic acid and regulating the ratio of polystyrene to polyacrylic acid in the adhesive; the prepared amphiphilic block copolymer adhesive can be uniformly dispersed and dissolved in water, so that the bonding effect of polystyrene blocks on carbon and the bonding effect of polyacrylic acid blocks on silicon are respectively exerted; the adhesive has the characteristic of multiple functions, the styrene block can adhere to silicon through hydrophobic interaction and pi-pi stacking action, the polyacrylic acid block can adhere to silicon through hydrogen bonding action, and the poly (2-(2-methoxy ethoxy) ethyl ester block can promote lithium ion conduction.

The invention discloses an in-situ combined repair method for polluted surface water environment. The in-situ combined repair method comprises the steps: (1) preparing powder zirconium modified zeolite, particle zirconium modified zeolite and powder zirconium modified bottom mud; (2) putting powder zirconium modified bottom mud into and utilizing mechanical stirring or hydraulic stirring to finishimproving surface-layer bottom mud through powder zirconium modified bottom mud; (3) sequentially adding the defined amount of the powder zirconium modified zeolite and the defined amount of the particle zirconium modified zeolite to form a bottom mud covering layer; (4) constructing a floating island system through the wrapped particle zirconium modified zeolite and a floating bed assembly. Thein-situ combined repair method disclosed by the invention has the advatanges: the zirconium modified bottom mud utilized in the in-situ combined repair method disclosed by the invention has more ecological property and environmental friendliness compared with traditional powder zirconium modified zeolite; by means of the in-situ combined repair method disclosed by the invention, synchronous preparation of the powder and particle zirconium modified zeolite is achieved; furthermore, the powder zirconium modified zeolite utilized by the in-situ combined repair method disclosed by the invention has stronger phosphorus passivating capacity; according to the in-situ combined repair method disclosed by the invention, water body in-situ repair methods of a bottom mud active covering / improving combined technology and a zirconium modified particle zeolite floating island technology are comprehensively utilized; thus, a repair effect is better, more cost-effective economic cost is achieved, and the in-situ combined repair method can be more suitable for a sustainable development idea.

The invention relates to the technical field of environmental pollution treatment, and especially relates to a method for safely utilizing and repairing lead-cadmium combined polluted soil. The method comprises the following steps: intercropping brassica juncea and wheat on the lead-cadmium combined polluted soil, and spraying an efficient lead-cadmium blocking agent from the jointing stage to the filling stage of the wheat. The lead and cadmium hyperaccumulator brassica juncea and the wheat are intercropped on the lead and cadmium combined polluted soil, and the absorption of the root system of the wheat to lead and cadmium in the soil is reduced by utilizing the hyperaccumulation capability of the brassica juncea to lead and cadmium in the soil; and meanwhile, the efficient lead-cadmium blocking agent is sprayed from the wheat jointing stage to the filling stage, absorption of lead and cadmium in atmospheric dust fall by wheat leaves and ears is reduced, migration of lead and cadmium in wheat tissues to wheat grains is reduced, and the purposes that the lead and cadmium in the wheat grains do not exceed the standard, the lead and cadmium content of the soil is gradually reduced, and lead and cadmium contaminated soil is repaired while production is conducted are achieved.

The invention relates to a seaweed fertilizer comprising a seaweed leach liquor. The seaweed fertilizer is prepared by the following steps: (1) seaweed extraction; (2) preparation of a fermentation medium; (3) inoculation and fermentation. The seaweed fertilizer provided by the invention is an active biological fungicide fertilizer of seaweed produced by pure physical and biological methods, and has the activity of seaweed and the living body adjusting function of biological fungicide. The number of effective living bacteria is greater than or equal to 2.0*10 to the power of 9 CFU / ml. Meanwhile, the fertilizer is rich in plant growth-regulating activity substances such as alginic acid, seaweed oligosaccharide, gibberellin (GA) and indoleacetic acid (IAA) biologically fermented, degraded and converted from seaweed gel. The fertilizer is directly absorbed by root systems of crops conveniently and fast in fertilizer efficiency, and can effectively accelerate high yield and early-ripe of plants, enhance the disease-resistance and improve the quality of crops, so that the fertilizer is an excellent special fertilizer for organic food.

The invention discloses a method of rapid incrassation and curing of purple new improving soil in the three gorges reservoir area, which comprises the following steps: (1) collecting rectangular pieces at equal altitude for the purple improving soil; (2) transversally dividing the land into a plurality of land units, and ditching for each unit in accordance with a wide surface and a narrow surface; (3) taking mellow soil on a surface layer of the narrow surface to lay on the wide surface to form a configuration with same ditches; (4) carrying out manual operation for the ditches to cause a ditch soil layer to be incrassated by more than 30cm; (5) performing zero tillage or minimal tillage on the border surfaces, planting conventional crops and planting soil improving crops in ditches; (6) mutually exchanging the ditches two years later; and (7) paralleling and leveling the ditches another two years later and finishing the soil incrassation and curing. The invention provides a technique with low construction cost and easy mastering for rapid incrassation and curing as well as reasonable utilization of the purple new improving soil in the three gorges reservoir area, organically combines agricultural utilization of the purple new improving soil with fertilization, does not affect normal production of peasants, is easy to learn and master, has convenient operation and low cost and really realizes organic unification for use and improvement of land.

The invention discloses a method of rapid incrassation and curing of purple new improving soil in the three gorges reservoir area, which comprises the following steps: (1) collecting rectangular pieces at equal altitude for the purple improving soil; (2) transversally dividing the land into a plurality of land units, and ditching for each unit in accordance with a wide surface and a narrow surface; (3) taking mellow soil on a surface layer of the narrow surface to lay on the wide surface to form a configuration with same ditches; (4) carrying out manual operation for the ditches to cause a ditch soil layer to be incrassated by more than 30cm; (5) performing zero tillage or minimal tillage on the border surfaces, planting conventional crops and planting soil improving crops in ditches; (6)mutually exchanging the ditches two years later; and (7) paralleling and leveling the ditches another two years later and finishing the soil incrassation and curing. The invention provides a technique with low construction cost and easy mastering for rapid incrassation and curing as well as reasonable utilization of the purple new improving soil in the three gorges reservoir area, organically combines agricultural utilization of the purple new improving soil with fertilization, does not affect normal production of peasants, is easy to learn and master, has convenient operation and low cost and really realizes organic unification for use and improvement of land.

The invention relates to a prefabricated assembly type UHPC pipe network floating structure and a construction method. The prefabricated assembly type UHPC pipe network floating structure is a UHPC pipe network framework obtained by assembling UHPC pipes and comprises the UHPC pipes and accessories used for connecting the UHPC pipes, and the UHPC pipes are connected and assembled through the accessories to form a UHPC pipe network framework structure. A UHPC pipe diameter, a pipe wall thickness, a pipe solid part density and a water density meet the following relation: R*rho w> 2*d*rho uhp, wherein R is the radius of the UHPC pipe, the d is the wall thickness of the pipe, the rho w is the density of water, and the rho uhp is the density of UHPC. The prefabricated assembly type UHPC pipe network floating structure is in a floating state. Organic unification of a buoyancy body and a structural body is achieved, self-weight of the structure is greatly reduced, and an effective load of thefloating structure is increased.

The invention relates to a fertilizer, and in particular discloses a seaweed biological fertilizer and a preparation method thereof. The seaweed biological fertilizer is made of the following raw materials in parts by weight: 30-50 parts of seaweed, 1-3 parts of hoof horn powder, 1-4 parts of EM bacteria, 2-3 parts of amino acid powder, and 1-4 parts of potassium humate , 12-14 parts of soybean powder, 12-35 parts of vitamin C, 2-6 parts of plant ash, 2-4 parts of Gongluomu, 4-8 parts of Smilax smilax, 1-3 parts of saponins, 2-5 parts of Toosendan, 3‑5 parts of Eucalyptus leaves, 3‑5 parts of Striga, 3‑6 parts of Cnidium, 4‑6 parts of Nepeta, 3‑8 parts of Morning Glory, and 3‑5 parts of Astragalus. Beneficial effects of the present invention: rich in organic matter, high utilization rate of fertilizer efficiency, long duration of fertilizer effect, comprehensive fertilizer nutrition, beneficial to soil improvement, fast absorption of crops, convenient application, both seaweed activity and living body regulation function of biological bacteria agent, can Effectively promote high yield and early maturity of crops, improve disease resistance and improve crop quality.

The invention discloses a real-name train ticket vendor which can sell a ticket to a person with a secondary resident ID card and a mobile telephone two-dimensional code. The invention is characterized in that a general control computer, a signal control, a bank card reader, a document printer, a secondary resident ID card reader, a two-dimensional code scanner, a railway ticket printer and a ticket issuing mechanism are arranged in a housing. A housing panel is provided with an LCD screen, an operating keyboard and so on. The railway ticket printer is connected with parallel ports of the general control computer. Other devices are connected with a plurality of serial ports of the general control computer through lines of communication. The general control computer is connected with a bankhost computer and a railway ticket center database through a bank front end processor and a train ticket front end processor, respectively. The invention is integrated with the train ticket real-namesystem and purchase of the ticket with the secondary resident ID card and the mobile phone, train ticket scalpers are prevented from acting in a disorderly manner.

The invention discloses a balance transmission system. The balance transmission system comprises a pulley, ropes and a transmission device; a transmission system is formed through steering and slidingeffects of the pulley; two sections of ropes with the same motion directions in the transmission system are adopted to replace slide rails to provide positioning installation to a strip module; and the strip module is driven to move on a frame by the transmission device to realize work of the strip module. The transmission device solves the balance problem during moving under the condition of notdepending on such additional parts as the slide rails, realizes organic unity of transmission and balance, and can effectively reduce the cost when improving the system stability and reliability.

The invention relates to a PLC glow control method and device for diamond growth. The method comprises the steps: acquiring initial glow power and a formula table, controlling the radio frequency power supply to start glow discharge, controlling the radio frequency power supply according to a comparison result of the standard vacuum pressure of the growth preparation stage in the formula table andthe first real-time pressure, controlling the radio frequency power supply to continuously perform glow discharge to keep the target glow power unchanged, and meanwhile, controlling the target pressure to be unchanged, controlling the radio frequency power supply to gradually reduce the glow discharge power, and controlling the radio frequency power supply according to a comparison result of thestandard vacuum pressure of the growth end stage in the formula table and the second real-time pressure. According to the control method, vacuum pressure control and radio frequency power supply glowdischarge control are organically combined, and good conditions are provided for diamond growth.

The invention relates to the technical field of environmental pollution treatment, and discloses a method for safely utilizing red-spotted stonecrop and wheat intercropping and repairing cadmium-polluted soil. The method is characterized in that red-spotted stonecrop and wheat are intercropped and planted on the cadmium-polluted soil, and an efficient cadmium blocking agent is sprayed from the jointing stage to the filling stage of the wheat. According to the method, the cadmium hyperaccumulators including red-spotted stonecrop and wheat are intercropped and planted on the cadmium-polluted soil, and absorption of the wheat root system to cadmium in the soil is reduced by utilizing the hyperaccumulation capacity of the red-spotted stonecrop to cadmium in the soil; and meanwhile, the high-efficiency cadmium blocking agent is sprayed from the jointing stage to the filling stage of the wheat, so that the absorption of cadmium in atmospheric dust fall by leaves and ears is reduced, the migration of cadmium in wheat tissues to wheat grains is reduced, and the purposes that cadmium in the wheat grains does not exceed the standard, the cadmium content of the soil is gradually reduced and the cadmium-polluted soil is repaired while production is performed are achieved.

The invention discloses a three-dimensional practical digital prototype system and a three-dimensional practical digital prototype construction method for spacecraft assembly. The 3D digital prototype system includes an interface module for obtaining the execution records of the on-site manufacturing execution system; an execution record management module for analyzing the types of execution records according to the execution records of the on-site manufacturing execution system, and Record the corresponding three-dimensional structured process files and three-dimensional process digital prototype, generate the practical process tree and its associated processes, the practical digital prototype tree and its associated process digital prototype, so as to generate the practical digital prototype. The three-dimensional actual digital prototype system and the three-dimensional actual digital prototype construction method for spacecraft assembly of the present invention realize the organic unity of design data, process data and production data, and form a structured and visualized electronic data package for the entire satellite assembly.

The invention discloses a method for preparing cylohexanediol diglycidyl ether. The method comprises: generating cyclohexanediol through the hydration of cyclohexene oxide; synthesizing o-chlorohydrin ether through the ring-opening reaction of dehydrated cyclohexanediol and epichlorohydrin; reacting the o-chlorohydrin ether and alkali to synthesize 1,2-cylohexanediol diglycidyl ether crude products; and obtaining products by performing oil-water separation, washing and filtration on the crude products and distilling out light components, wherein catalysts for both hydration and ring-opening reaction are fluoboric acid, and the mol ratio of cyclohexene oxide to water to fluoboric acid to epichlorohydrin is 1:5-50:0.002-0.1:1.8-2.5. The method has the advantages of taking fluoboric acid as the catalysts for both hydration and ring-opening reaction, realizing the organic unity of the catalysts in a two-step process, reducing energy consumption, shortening process time, avoiding large amounts of waste water produced by repeated recrystallization during the purification of cyclohexanediol and helping to environmental protection.