42 results about "Experimental Unit" patented technology

The invention provides a network online business-based system and a network online business-based method for risk rule / model establishment and optimization. The network online business-based system for risk rule / model establishment and optimization comprises a risk control unit and a risk rule experimental unit. The risk control unit is used for monitoring business data in an online transaction business according to a risk rule / model to filter out risk data in the business data and to process the risk data. The risk rule experimental unit is connected with the risk control unit and is used to provide a simulated actual transaction environment for testing the risk identification capacity of the risk rule / model and optimizing and revising the risk rule / model. When optimizing the risk rule / model, the system and the method have the advantages of automatic operation, no occupation of online resources and no cost of human labor and time.

The invention discloses a system and a method for satellite positioning by using an optical signal of quantum characteristics, which mainly solves the problems of low positioning precision and time synchronous precision of the traditional global positioning system. The system mainly comprises a quantum light source generator, a reflector, a pyramid reflector, a delay controller, a beam splitter, a photon detector, a coincidence measurement unit, a photon pulse period accumulation unit, a TOA (Time Of Arrival) measurement unit, a data processing unit, a navigation positioning test experimental unit, and the like. The positioning method comprises the following steps of: acquiring a pulse accumulation outline by utilizing the optical signal of quantum characteristics, generated by the quantum light source generator, as external information input; obtaining TOA pulse information through detecting a model, carrying out data processing through a filter, and acquiring parameters, such as, position, time, and the like of a positioned object in real time; and realizing high precision positioning and timing. The invention has the advantages of providing long time and high precision navigation positioning for a navigational satellite, improving the accuracy of the satellite navigation positioning and the high confidentiality of information transmission, is suitable for the fields of navigation, positioning and timing of stationary or moving targets on the ground and spacecrafts in low earth orbit and can also be used in the application field of high precision autonomous navigation positioning of deep space and interplanetary flight spacecrafts, celestial body landers and surface cruisers thereof.

The invention discloses a device for evaluating short-period snow melting performances of a salt-applied snow-self melting road surface. The device provided by the invention comprises an ambient temperature box, an experimental unit, a loading unit and a test unit, wherein the experimental unit, the loading unit and the test unit are arranged in the ambient temperature box. The test unit comprises test pieces, ice and snow bestrewed on the test pieces, a thermal-insulating and water-resisting material arranged each adjacent two of the test pieces, elastic shock pads arranged on the tops of the thermal-insulating and water-resisting materials, porous separator plates arranged at the bottoms of the test pieces, and waterproof material wrapping the test pieces. The loading unit comprises a rolling wheel which can carry out straight reciprocating motion, and a loading device for lifting the rolling wheel, wherein the loading device is installed in a linear-type guide rail and is connected to a radially movable turn plate by a connecting rod and the radially movable turn plate is driven by a motor. The test unit comprises drainage devices, and measuring cylinders which are utilized for holding and measuring solutions and are arranged under the drainage devices, wherein a density measuring instrument and a laser receiving and transmitting device are arranged in each one of the measuring cylinders. The device provided by the invention can be utilized for simulation of a test on short-period snow melting effects of a salt-applied snow-self melting road surface under the action of vehicle rolling, and is mainly utilized for evaluation of short-period snow melting performances of a salt-applied snow-self melting road surface.

The invention discloses a high-yield cost-saving efficiency-improving northern buckwheat cultivation method. The method includes the following steps of crop rotation, land preparation, variety selection, fertilization, seed treatment, seeding, field management and harvesting. Yield increase and incoming increase of buckwheat are realized by taking comprehensive measures like selecting proper seeding time and reasonable density, mainly applying base fertilizer and seed fertilizer, additionally performing topdressing, mainly using farm manure, additionally using chemical fertilizer and fertilizing proportionally. Experimental demonstration of new buckwheat varieties and the method is performed in part of main buckwheat producing areas in North China, Northwest, Southwest and Northeast and shows that yield is increased remarkably, more than 80% of experimental units realizes yield increase, cost is saved, and benefit is increased remarkably.

A system for automation of technical processes and / or experiments having a measurement unit and a control unit which are connected to sensors and actuators of the process or of the experimental unit via measurements and control channels, having at least one library that contains visualization objects and control modules, and having software that manages the system. The system enables the user to develop applications without knowledge of programming techniques. Technologists, chemists, scientists using the system no longer need to rely on the aid of programming specialist.

An experimental unit of suspended basket security keylock in high-lift operation relates to an experimental unit that comprises: supporting leg, dropped iron, parallel, pusher clusters, elastic machine, sensor, upper beam, elevator, bridging beam, power distribution wire, power distribution control pedestal, safe tension monitoring device, platform horizontal monitoring mechanism. The upper beam and the bridging beam are mounted on the upper part of supporting leg via flanged connection, the elevator is mounted on the beam, the elastic machine and parallel are hung on the elevator, the elastic machine is connected with the pusher clusters via brace, the dropped iron is mounted under the parallel equipped with additional weight iron, the suspended buffer and sensor are located on the beam, the safe tension monitoring device consists of tension sensor and secondary instrument, the upper beam is case welded by steel sheet; The unit reinforces quality inspection for security keylock, eliminates the accident potential caused by quality problems of security keylock. The equipment and personal safety can be safeguarded effectively.

The invention relates to a method for constructing a power generation carbon emission quota distribution model under an inter-provincial carbon trading mechanism, belonging to the technical field of low-carbon electricity of power systems. The method comprises the following steps of: constructing a first-stage distribution model for inter-provincial quota distribution, wherein the first-stage distribution model is composed of two links including an initial distribution model and a re-adjusted model for the result of the initial distribution model, and, by taking the result of the first-stage distribution model as the boundary condition, constructing a second-stage distribution model for distributing carbon emission quota distribution results of various provinces obtained by the first-stage distribution model among various power plants in the province; and, according to the two-stage distribution models, obtaining an inter-provincial distribution scheme for power generation carbon emission quota distribution and the power generation carbon emission quota of various power plants in the province under the inter-provincial carbon trading mechanism. According to the method disclosed by the invention, on the basis of the existing carbon trading experimental unit in the province, power generation carbon emission quota distribution under the inter-provincial carbon emission trading mechanism is researched in combination with characteristics of the power industry; due to the method disclosed by the invention, low-carbon development can be realized; excessive consumption of fossil energy can be reduced; and the purpose of effectively reducing carbon emission can be achieved.

The invention discloses an individual nutrients deficiency risk assessment method based on SNP (Single Nucleotide Polymorphism) site, which is named as INRAS (Individual nutrients deficiency risk assessment based on SNP). The method is aimed at N SNP site of an individual or N individuals of an SNP site as an experimental unit, the studied object is SNP site related to individual nutrient metabolism capacity, and primers are designed and synthesized according to locus information; DNA is then extracted out from the blood of the individual to carry out PCR (polymerase chain reaction) amplification, an assay result is then obtained by a fluorescence scanner, and finally, a risk assessment model is adopted to analyze the result. The risk assessment model disclosed by the invention, which is created on an evidence-based inclusion basis of SNP site, can accurately and systematically assess various nutrients deficiency risks of the human body on the basis of the SNP site; and a dynamic riskassessment model which is created on the basis of critical values of biochemical indexes of population nutrients can carry out accurate and systematic dynamic assessment on various nutrients deficiency risks of populations on the basis of the SNP site.

The invention relates to the field of hydraulic experiments, in particular to an experimental device and an experimental method for researching water flow characteristics of multiple types of river channel intersection ports. The aim is that the experimental device and the experimental method can carry out experiments on water flow characteristics of different types of river channel intersection ports, and are characterized by being easy to operate and being high in reutilization. The technical scheme is that the experimental device suitable for researching water flow characteristics of multiple types of river channel interaction ports is characterized by comprising a Y-shape symmetric river channel intersection experiment unit, two straight river channel interaction experiment units, a bending river channel and straight river channel intersection experiment unit, a water supplying pool set, and an external tank. The experimental method utilizing the experimental device for researching water flow characteristics of multiple types of river channel intersection ports includes the following steps: step 1, determining an experiment zone of intersection of three types of river channels; and step 2, conducting research on many issues through the structure of the external tank.

The invention discloses a theory and experiment integration synchronous teaching system. The theory and experiment integration synchronous teaching system comprises an experimental unit composed of experimental devices, a measurement and control unit for acquiring and controlling the experimental unit, and a teacher teaching unit for receiving data and audio-video signals acquired by the measurement and control unit and a control signal sent to the experimental unit so as to finish the theory and experiment integration synchronous teaching, wherein the teacher teaching unit also receives an operating command input by a student studying unit for analysis treatment, controls the measurement and control unit to perform real-time data acquisition on the experimental unit, and controls the measurement and control unit to output a command signal to control each experimental device in the experimental unit to carry out experimental operation demonstration. The theory and experiment integration synchronous teaching system can realize theory and experiment integration synchronous teaching efficiently; in addition, the student in the student studying unit controls the experimental unit to realize the theory and experiment integration synchronous studying through the measurement and control unit.

The invention discloses a modularized electronic-technique comprehensive application experimental box, and relates to the field of electronic-technique teaching facilities. The modularized electronic-technique comprehensive application experimental box is characterized by comprising a functionalized box body, a base plate and an experimental functional module plate, wherein the base plate is mounted on the box body. The base plate is divided into two parts of an auxiliary functional area and an experimental module mounting area. A power supply application module, a pulse signal generator, a decoding display module, a logic level measuring module, a logic level output module, an audio signal input-output module, a single-turn potentiometer, a multi-turn potentiometer and the like are integrated in the auxiliary functional area. A bus connecting way is adopted for the experimental module mounting area; independent experimental units are mounted in experimental expansion areas respectively in a module form by using copper banana plugs; an experimental plate is provided with six experimental modules at the same time; the modules can be interconnected and intercommunicated through buses. Each experimental plate can be used for independently carrying out an experiment and a test on the base plate, and is plugged back into the box body to form a system with rest templates; a system function in some aspect is completed. The middle of the box body is used for storing experimental expansion plates which are nested and piled together.

The invention discloses a spark plug of a gasoline engine with multiple laterals and a multifold gap. Various improved electrodes are provided, for example, an electrode (12) is provided with multiple laterals and a multifold gap, the middle of the electrode (12) is provided with the multifold gap (18) which is favorable for opening a discharging channel and is easy to have more sparking; an improved electrode is an electrode (21) provided with multiple laterals and a multifold gap (grid plate grid) and has the transverse characteristic of multiple plates which are favorable for forming grid plate grid lattice effect so as to improve the probability of electric sparks and drum shape discharging; and a particularly improved electrode is an electrode (22) provided with a round basin with a lateral surface and a dug middle acute-angle star, which is characterized by the round basin with the lateral surface and the dug middle acute-angle star, the electrode has the basin, the top and the lateral surface so as to increase the lateral discharging front, the five-pointed star dug in the middle of the electrode is favorable for the wedge effect of the discharging gap and marginal discharging effect to form asymmetrical multi-point random discharging channels so as to contribute to improving discharging probability and removing accumulated carbon, and the acute-angle star-shaped electrode is favorable for the continuous electric spark effect, turbulence-caused spark-front torsion, mutual penetration of molecules, the increase of turbulence rate and the increase of ignition probability. The various improved electrodes are selected according to different machine types, particularly ignition angles, more or less in experimental units during practical use.

The apparatus thereof comprises: a tested solution heating device and a cavitation experimental unit located above the tested solution heating device. The invention also comprises a temperature controller for controlling the tested solution temperature; the temperature controller comprises a temperature sensor. Said cavitation experimental unit comprises a supersonic generator; there is a transducer connected to the supersonic generator via a amplitude bar; on the bar head of the amplitude bar the test block is set.

The present invention relates to a teaching experiment instrument, especially a teaching experiment instrument for analog and digital electronic circuit experiments in electronics, specifically an electronic circuit experiment platform, at least including an experiment platform, a power supply unit, an experiment unit, a display unit and The signal source unit, the power supply unit, the display unit, and the signal source unit are embedded in the panel frame of different positions of the experimental platform panel, and it is characterized in that: the experimental platform at least includes an electrical connection plug-in; the experimental unit is connected to the On the experimental platform, the experimental unit is electrically connected with the power supply unit, the display unit and the signal source unit. Without increasing the occupied area, more experimental contents can be set up on one platform, and it has the characteristics of many experimental contents and easy preparation.

The invention provides a parallel monitoring analysis system based on an ACP method and mobile phone signaling data, and a method thereof. The system comprises an artificial monitoring system and an actual monitoring system, a parallel execution transmission system is electrically connected between the artificial monitoring system and the actual monitoring system, thereby interactively transmitting the data of the artificial monitoring system and the actual monitoring system in real time, dynamically executing a data instruction in parallel, and performing the bidirectional feedback; the artificial monitoring system comprises a data unit, a storage unit, a computing experimental unit and an application unit; the parallel monitoring analysis method is based on the above-mentioned parallel monitoring analysis system. Based on the ACP method and the mobile phone signaling data, the road state, the regional people flow and like are monitored in real time through the mobile phone signalingdata in the actual monitoring system, and the actual monitoring system is optimized and fed back at the same time to achieve the aims of real-time monitoring, real-time feedback and real-time scheduling, thereby providing corresponding decision-making information for a user and the traffic control department.

The invention discloses an experimental device for studying uniform variable speed linear motion. The device includes a table body and an experimental unit, the experimental unit comprises an experimental board, supporting legs, a fixing frame, a connecting frame, a pulley, a vehicle body, a buckle ring, a connecting rope, a tension sensor, a hook, a paper tape and a dotting timer; the supportinglegs are vertically fixed at the four corners of the bottom of the experimental board, the fixing frame is fixed on the supporting legs at one end of the experimental board, and the supporting legs are fixedly connected with the table body through the fixing frame, and the other end of the bottom of the experimental board is in sliding connection with the connecting frame, the experimental board is fixedly connected with the table body through the connecting frame, the pulley is vertically mounted at one end of the top of the experimental board, the vehicle body is arranged on one side, located on the pulley, of the experimental board. According to the experimental device is used for studying uniform variable speed linear motion, the supporting legs are fixed at the bottom of the experimental board, the height of the experimental board can be adjusted through the supporting legs, so that teaching of the teacher can be facilitated and the experimental board can be conveniently fixed through the connecting frame and the fixing frame.

The invention discloses an electronic auxiliary system for electric power material bidding invitation and bidding evaluation. The electronic auxiliary system comprises a grading detailed rule generation module, a reading standard preliminary assessment module and a quantitative detailed evaluation marking module. By use of the system, through the formation of a detailed reading standard process record, while reading standard working efficiency is improved, the normalization and the traceability of bidding evaluation work is improved. On the basis of using a quantitative detailed evaluation marking function in an experimental unit, a quantitative detailed evaluation marking system and a reading standard preliminary assessment system are subjected to data connection, the integral operation of reading standard preliminary assessment and quantitative detailed evaluation is realized, the workload of an expert is lightened, bidding evaluation working efficiency is improved, and the objectivity and the scientificity of work are improved so as to avoid an incorrupt government risk.

The invention provides a high-temperature directional solidification experimental device and an experimental method for a material under a super-gravity environment. The experimental device comprisesa centrifuge unit, an ampoule unit, a temperature control unit, and a control unit. The centrifuge unit comprises a first experimental unit and a second experimental unit. The ampoule unit is providedon the first experimental unit and comprises an ampoule sleeve, a secondary heating assembly, a meltable substrate cartridge, a meltable substrate, a crucible tube, and a primary heating assembly. The ampoule sleeve is provided with a hollow interior cavity. The secondary heating assembly is nested at the bottom of the inner side of the ampoule sleeve. The meltable substrate cartridge is mountedat the upper opening of the secondary heating assembly. The meltable substrate is placed in the hollow interior cavity of the meltable substrate cartridge. The crucible tube is nested inside the ampoule sleeve and the meltable substrate cartridge. The primary heating assembly is provided between the ampoule sleeve and the crucible tube. The meltable substrate flows into the hollow interior cavityof the secondary heating assembly after being melted. According to the high-temperature directional solidification experimental device and the experimental method for a material under a super-gravityenvironment, the directional solidification of the sample material under the condition of supergravity can be easily and conveniently realized without using a mechanical transmission mechanism such asa gear screw or an external device such as a motor.

The invention relates to a surveying and mapping major course teaching platform APP based on a smart phone, and belongs to the technical field of intelligent teaching systems. The experiment content,internship content, experimental apparatus devices, surveying and mapping interior work calculation and typical surveying and mapping engineering case courseware and videos related in surveying and mapping major courses are put in the APP, so the self-studying and reviewing of students are facilitated. A preview unit, a study unit and a review unit are arranged in a student module. A surveying andmapping major theory unit, a surveying and mapping major experiment unit, a surveying and mapping major internship unit and an interaction unit are arranged in the study unit. The interaction unit isconnected with a teacher module. The study unit is matched with a courseware document unit, a graphical representation unit and a video unit. By establishing a surveying and mapping major course teaching resource library, the professional standard of teachers can be improved, and the study mode of students can be enriched. The teaching resource library can provide a convenient network platform for teaching, and the more convenient and effective approach is provided for teaching and communicating of the teachers and students.

The invention discloses a method for constructing a trichloropropane degrading bacterium by taking pseudomonas putida as an original strain, belongs to the technical field of environmental restoration, and relates to a method for stably and efficiently expressing three genes dhaA31, hheC and echA in a trichloropropane degrading pathway in the pseudomonas putida and practical application of the engineering bacterium. The method comprises the following steps of: optimizing a codon of a foreign gene; replacing a prompter and a ribosome bind site of an original gene; and using a traceless insertion method to respectively integrate optimized expression cassettes into a genome of the pseudomonas putida, so as to obtain the engineering bacterium which is capable of stably and efficiently expressing trichloropropane degrading genes. The engineering bacterium is inoculated into an industrial sewage small experimental unit and is capable of degrading 2Nm / L of trichloropropane in two days. According to the outstanding performance of the engineering bacterium in the small experimental unit, the engineering bacterium has huge potential in the large-scale treatment of industrial polluted wastewater.

The invention aims to provide a multi-connection experiment system. A plurality of experimental units share a set of confining pressure loading pipeline and a penetration upstream pipeline, a sample is subjected to confining pressure in the experiment process, and the osmotic pressure is provided by a same confining pressure source and a permeation source; an axial pressure system of each experiment unit is independently connected with an axial pressure loading pump; and the permeation downstream is independently connected to an atmospheric pressure or a downstream permeation storage tank. A rock mechanical comprehensive experiment system with not less than two samples can be simultaneously carried out, and as expansibility, the system can be simply changed into the experimental system which only carries out single sample test according to the requirements of researchers.

The invention relates to the technical field of petrochemical storage tank safety, and discloses an experimental device for simulating hydrocarbon fire. The device comprises an experimental unit and asafety unit; the experimental unit comprises a fuel tank (1), a gas mixing device (2), an injection device (4), a pitching mechanism (5), an ignition device (6) and a pipeline, wherein the fuel tank(1) is connected with one end of the gas mixing device (2) through the pipeline, the other end of the gas mixing device (2) is connected with the injection device (4) through the pipeline, the pitching mechanism (5) is fixed with the injection device (4) and used for adjusting the angle of the spraying device relative to the ground, and the ignition device (6) is used for igniting the injection device (4). A safety unit (7) comprises a flame detector alarm device for monitoring the injection device (4). The experimental device for simulating the hydrocarbon fire can simultaneously simulate pool fire and jet fire, can adjust radiation intensity, and meets different experimental requirements.

Provided is a measuring apparatus 2 for circulated oil flow rate in a freezing cycle wherein a circulated oil amount in the freezing cycle is measured on line, and a flow rate of oil returned to an arbitrary portion of the line is controlled with high accuracy. An oil separator 3 including an oil tank 3b and an oil level meter 6 is interposed in the course of a cooling pipe line 12a on the discharge side of a freezing compressor 12, and oil mixed in a refrigerant is separated into the oil tank 3b. Further, a motor driven flow rate control valve 4b capable of adjustment of an oil level in the oil tank 3b or / and a motor driven control pump 7a, and a mass flow rate meter 5 are disposed in series on a pipe line 2b on the oil outlet side of the oil tank 3b to form a measuring apparatus 2 for a circulated oil flow rate adapted such that the oil effluxed from the mass flow rate meter 5 is returned to the freezing cycle.

This invention describes a new, high-efficiency method of selecting and advancing pollen donator strains in a breeding or product advancement program, wherein the pollen donator strains are specifically selected to maximize product attributes. Embodiments of this invention relate to the use of a mix of pollen from multiple potential pollen donator strains to cross-pollinate a female corn plant, allowing for single-plant performance comparisons. The comparisons of products from the single plant or less experimental unit allow for the selection of those pollen donator strains that maximize desirable results.

The invention provides a method for appraising the genuine hydroxyl in ancient ceramics. Wherein, a laser Raman microprobe is used to check the genuine of ancient ceramics of more than 50 years old by detecting hydroxyl, namely, -OH in the glass phase in the glaze surface of the ceramic. The invention is studied by years of tests and verified by experimental units. Comparison tests are conducted on some ceramic pieces sintered 50 years before and ceramic pieces sintered in modern time as well as simulated ancient ceramic pieces, the test results show that any ceramic containing hydroxyl in the glass phase in the ceramic glaze surface is ancient ceramic sintered 50 years before; and any ceramic containing no hydroxyl in the glass phase in the ceramic glaze surface is sintered at modern time, is false ancient ceramic. Comparing with prior way for appraising ancient ceramic, the invention is scientific, practical, of accurate appraisal results, can be popularized in the genuine appraisal of ancient ceramics.

The invention discloses an emission reduction type soil testing and formula biogas fungus organic fertilizer and application thereof. The organic fertilizer is a liquid organic fertilizer or a granulate organic fertilizer; the liquid organic fertilizer mainly consists of a liquid organic formula fertilizer and selenium-rich biogas slurry and / or ordinary biogas slurry; and the granulate organic fertilizer mainly consists of a granulate organic formula fertilizer and selenium-rich 'biogas residue and fungus chaff' and / or ordinary 'biogas residue and fungus chaff'. The biogas residue and biogas slurry can be effectively utilized, eastern, western and Xiong'an New District formula fertilization, feces utilization and biogas residue and biogas slurry cultivation edible fungus and edible fungus soy sauce projects are combined together through cooperation of eastern, western and middle districts, and a 'poor county carbon trading experimental unit and science park' is established, so that the nation, enterprises and farms gain benefits, the cost is low, the benefit is high, and the emission reduction effect is good.

Methods of analyzing equivalency with respect to split and limited release lots of wafers of integrated circuits. One embodiment of the split-lot method includes: (1) dividing a set of data regarding the split lot into control and experimental subsets, (2) summarizing statistics regarding the set and the subsets to an experimental unit above a site level and (3) performing a two-way analysis of variance with respect to the statistics to determine the equivalency, using the set for one way of the analysis of variance and the subsets for another way of the analysis of variance. One embodiment of the limited-release method includes: (1) designating a set of data regarding a lot fabricated by a normative integrated circuit fabrication process as a control set, (2) designating a set of data regarding the limited release lot as an experimental set, (3) summarizing statistics regarding the control and experimental sets to an experimental unit above a site level and (4) performing a Kruskal-Wallace test with respect to the statistics to determine the equivalency.

Methods of analyzing equivalency with respect to split and limited release lots of wafers of integrated circuits. One embodiment of the split-lot method includes: (1) dividing a set of data regarding the split lot into control and experimental subsets, (2) summarizing statistics regarding the set and the subsets to an experimental unit above a site level and (3) performing a two-way analysis of variance with respect to the statistics to determine the equivalency, using the set for one way of the analysis of variance and the subsets for another way of the analysis of variance. One embodiment of the limited-release method includes: (1) designating a set of data regarding a lot fabricated by a normative integrated circuit fabrication process as a control set, (2) designating a set of data regarding the limited release lot as an experimental set, (3) summarizing statistics regarding the control and experimental sets to an experimental unit above a site level and (4) performing a Kruskal-Wallace test with respect to the statistics to determine the equivalency.

The invention discloses a closed underground water solute migration simulation experimental device which comprises a liquid supply unit, a parallel experimental unit, a liquid waste recovery unit, a closed combined cabinet and a waste gas recovery unit, wherein the liquid supply unit provides a solution for the parallel experimental unit, and the flow of effluent or a water head can be controlled; the parallel experimental unit is used for an underground water solute migration simulation parallel experiment, and the experimental solute migration process is monitored through sampling; and the liquid waste recovery unit is used for recovering wastewater generated by the experiment. A closed space is formed by the closed combined cabinet, toxic volatile polluted solute gas is prevented from diffusing, the waste gas recovery unit is used for collecting volatile solutes in the experimental process, and atmospheric pollution is avoided. The experimental device disclosed by the invention is suitable for a simulation experiment of volatile or semi-volatile polluted solutes and has the characteristics of sustainability and high stability. Meanwhile, the experimental equipment is simplified, the experimental cost is saved, and the uniformity of the water head or flow conditions during the parallel experiment is guaranteed, so that comparative analysis of the parallel experiment results is facilitated.