32results about How to "Easy to practice" patented technology

The invention discloses an active learning-based electric power knowledge graph construction method and system, and relates to the technical field of electric power market transaction data analysis, and the method comprises the steps: collecting data, cleaning the collected data, generating word prediction task data of an electric power transaction scene, and training an electric power field word embedding model; generating an entity relationship training sample, inputting a word embedding model, performing entity relationship label prediction through an entity relationship joint extraction model, extracting a high-quality sample based on active learning to perform part-of-speech tagging, and training the model based on a tagged sample; and applying the trained entity relationship joint extraction model to power transaction data to construct a knowledge graph, performing manual correction and entity unification, and storing the knowledge graph into a Neo4j database. According to the method, active learning and deep learning are combined, so that the sample labeling cost is effectively reduced, and meanwhile, the model performance is ensured.

The embodiment of the invention relates to the technical field of vehicle manufacturing, in particular to a multifunctional holding feeling variable steering wheel which comprises a rim, a center shaft hub, a plurality of spokes, a controller and a control button, the rim is installed on the center shaft hub through the spokes, the center shaft hub is connected with a steering column, and the controller is connected with the steering column. The wheel rim is provided with two normally-held areas, the wheel rim and the central shaft hub are hollow, the two normally-held areas are provided with adjusting areas, the positions, in the adjusting areas, of the wheel rim are hollowed out, the hollowed-out positions are fixedly covered with rubber sheets, and an adjusting groove, an air bag and a two-way air pump are arranged in the wheel rim. The adjusting groove is fixedly formed in the position of the adjusting area, the air bag is arranged between the adjusting groove and the rubber sheet and connected with the two-way air pump, the controller is installed in the hollow portion of the center shaft hub, and the control button is fixedly arranged on the center shaft hub.

The invention belongs to the field of steelmaking refining, relates to a preparation and use method of a complex deoxidizer for LF slagging, and aims to solve the problems that the existing complex deoxidizer containing elements such as calcium, magnesium, barium, strontium, sodium and potassium is difficult to detect and analyze, the quality is difficult to guarantee, low-melting-point inclusions are formed in steel, the cleanliness of molten steel is influenced, and the molten steel cannot be cleaned easily. According to the invention, the steel ladle top slag after converter or electric furnace tapping is subjected to deoxidation modification, and the desulfurization, deoxidation and inclusion removal functions are improved. The steel slag deoxidizing agent is scientific and reasonable in chemical component design, good in physical performance, wide in material source, simple to prepare, rapid in steel slag deoxidizing, obviously improved in molten steel cleanliness and low in application cost.

The utility model relates to the technical field of medical teaching aids, and discloses a marrow cavity puncture practice needle which comprises a puncture needle body and a fixing seat, and the puncture needle body is movably installed on the fixing seat. The puncture needle body comprises a needle rod and a needle core, a movable cavity allowing the needle core to slide is formed in the needle rod, a reset spring is arranged in the movable cavity, the bottom end of the reset spring is fixedly connected to the top of the needle core, the top end of the reset spring is connected to the top wall of the movable cavity, a first installation cavity is further formed in the needle rod, and an angle sensor is arranged in the installation cavity. A puncture part is formed on the fixing seat, a second mounting cavity is further formed in the fixing seat, a pressure sensor is arranged in the second mounting cavity, and the second mounting cavity is located below the puncture part; and the puncture part is made of a flexible material. The purpose of the utility model is to enable students to intuitively judge whether own action essentials are standard or not when practicing bone marrow puncture, and make adjustments in time, so that the practicing effect is better.

The invention relates to the technical field of waste hydrogenation catalyst treatment, and discloses a recovery method of active metal in a waste hydrogenation catalyst, a preparation method of a residual oil hydrogenation catalyst and application of the residual oil hydrogenation catalyst, and the method comprises the following steps: (1) leaching the waste hydrogenation catalyst by using an acid solution to obtain a leachate; (2) the concentration of hydrogen ions in the leachate is adjusted to be 0.05-2 mol / L, then the leachate is in contact with a first extraction agent, washing and reverse extraction are conducted, and a Mo solution is obtained; (3) adjusting the pH value of the first raffinate to 1-2.1, then contacting the first raffinate with a second extraction agent, and then carrying out washing and reverse extraction to obtain an Al solution; and (4) adjusting the pH value of the second raffinate to 2.2-3.5, then contacting the second raffinate with a third extraction agent, and then carrying out washing and reverse extraction to obtain a Ni and / or Co solution. The method can realize hazardous waste resource utilization, and can significantly reduce the production cost of the hydrogenation catalyst.

The invention relates to the technical field of steel production, and provides a product carbon footprint calculation method considering scrap steel circulation, which comprises the following steps: step 1, calculating the direct emission of greenhouse gas; 2, calculating the total emission amount of the greenhouse gas in the life cycle; and step 3, considering a 1t functional unit product carbon footprint in a waste steel circulation stage. According to the method, comprehensiveness and accuracy are improved, and by integrating all direct emission sources, traditional emission calculation is covered, and emission reduction contribution of carbon sequestration products which are usually ignored is further included. The comprehensiveness enables the carbon footprint calculation to truly reflect the actual environmental influence of the enterprise or the production process. Besides, more accurate carbon footprint data support enterprises and policy formulators to make more effective strategies and measures, such as investment in more efficient technologies or optimization of resource allocation, thereby reducing environmental impact, promoting practice of circular economy, and reducing requirements of the industry for raw materials and environmental footprints thereof.

The invention discloses an art education practice resource collaboration method and system, and relates to the technical field of wisdom education, and the method comprises the steps: S1, resource management: extracting resource information in an information collection form, classifying and distributing corresponding resource labels, and storing the resource labels in a preset database; s2, demand collaboration: if demand data uploaded by a user is received, analyzing to generate a demand field; a database is retrieved according to the demand field, and the resource adaptation degree is calculated; if the resource adaptation degree of a certain item of data reaches the standard, corresponding resource information is extracted and sent to a demand side, and after the demand side initiates a demand communication request, a resource cooperation request is sent to a user corresponding to the resource information; and sending any one or more of contact information, identity information and occupations of the user corresponding to the resource information to the demand side after the request is passed. The method has the effect of helping related institutions and personnel to better carry out labor practice activities.

The golf swing practice rod comprises a first rod body, a second rod body, a grip and a rod head, external threads are arranged on the periphery of the upper portion of the first rod body, internal threads are arranged on the inner side of the lower portion of the second rod body, and the external threads of the first rod body are connected with the internal threads of the second rod body through a thread structure. A sliding rod is fixedly installed in the middle of the interior of the first rod body, a permanent magnet is slidably installed on the sliding rod, and an electromagnet is fixedly installed above the permanent magnet and in the first rod body. The rod body extends and retracts through threaded connection, and can be used by practicers with different heights; meanwhile, a magnetic attraction device is arranged in the rod body, potential safety hazards are avoided, the magnitude of current can be adjusted through a current regulator according to different requirements of practicers so as to adjust the magnitude of attractive force between the permanent magnet and the electromagnet, the practice difficulty level can be adjusted, the swing posture of the practicers can be corrected, and the swing strength can be exercised; therefore, a better exercise effect is achieved.

The invention relates to the technical field of teaching display, and discloses a display support for vocal music piano teaching, which comprises a base, moving wheels are fixedly assembled at the bottom of the base, a support frame is fixedly mounted at the top of the base, a second sliding groove is formed in the outer wall of the support frame, and a piano placement display assembly is arranged on the inner wall of the second sliding groove. A lifting rod is slidably connected to the top of the supporting frame, and a third sliding groove is formed in the outer wall of the lifting rod. A controller transmits a signal, so that a motor can start to work, then a rotating shaft can drive a straight groove handle to rotate, after the straight groove handle rotates to 90 degrees, a music score placing frame can be pulled downwards from the outer wall of the straight groove handle by pulling a handle, and a music score for vocal music piano teaching can be placed on the inner wall of a limiting fixing belt to be fixed; therefore, the device can achieve the purpose of better teaching display, can improve the teaching efficiency, and provides convenience for teachers and students at the same time.

The utility model discloses a writing board for calligraphy practice, and relates to the technical field of writing boards, the writing board comprises a writing board body, the surface of the writing board body is provided with a placing table, the right side of the writing board body is fixedly provided with an ink grinding table, the surface of the ink grinding table is provided with an ink grinding groove, the upper part of the writing board body is provided with a pleat removing mechanism, and the upper part of the writing board body is provided with a pleat removing mechanism. And a storage mechanism is fixedly mounted on the left side of the writing board body. The fixed block is arranged to be matched with the movable column, so that the connecting plate drives the edge pressing frame to press edges of paper placed on the surface of the placing table, meanwhile, the sliding groove is matched with the smoothing plate and the grip, wrinkles on the surface of the paper are smoothed by the smoothing plate, a writer can conveniently and better practice calligraphy, the practicability of the writing board is improved, and the writing board is worthy of popularization and application. The writing brush storing and taking box is arranged to be matched with the movable roller, the surface of the writing brush storing and taking box is conveniently covered with the cover plate, meanwhile, the inserting groove is matched with the inserting block, the sealing performance of the writing brush storing and taking box is better, and the writing brush storing effect is improved.

The utility model relates to an automobile comfort system fault box with fault setting and diagnosis training functions, which comprises an upper box body and a lower box body, a plurality of measuring terminals are arranged on the surface of the upper box body, a PCB (printed circuit board) is arranged in the lower box body, a plurality of fault setting circuit breakers are arranged on the surface of the PCB, the plurality of fault setting circuit breakers are provided with fuses, and the fuses are connected with the measuring terminals. According to the utility model, the vehicle comfort system can be rapidly connected, the voltage, waveform and resistance of a vehicle circuit can be measured without damaging the original vehicle wiring harness in the teaching process, and fault points can be set and cleared on a control circuit at the same time. Students are helped to complete circuit fault detection and diagnosis training of the automobile comfort system. And during on-site examination, fault points can be randomly set, so that the examination fairness is ensured.

The embodiment of the present invention discloses a pair of practice chopsticks, comprising a first chopstick, a second chopstick and a connecting member, wherein a first connecting groove is provided on a side wall of the first chopstick near the head side, a second connecting groove is provided on a side wall of the second chopstick near the head side, and both the first connecting groove and the second connecting groove are through holes; the connecting member is elastic, and comprises a first folding portion, a second folding portion, a first inwardly concave rod, a second inwardly concave rod and a crescent portion, and the connecting groove of the second chopstick is hinged on the crescent portion, the first folding portion and the first inwardly concave rod are located at the upper part, and the second folding portion and the second inwardly concave rod are located at the lower part; one end of the first folding portion is fixedly connected to one end of the first inwardly concave rod, and one end of the second folding portion is fixedly connected to one end of the second inwardly concave rod. The practice chopsticks can be used to clamp food at the most suitable angle and with the least force to achieve the best practice effect.

The invention discloses an archery auxiliary practice device, comprising a base, characterized in that: the left side of the base is rotatably connected to a rear cantilever, the top of the base is fixedly connected to a main pipe seat, the right side of the base is rotatably connected to a front cantilever, the left end of the main pipe seat is connected to a main pipe, the right end of the inner cavity of the main pipe is provided with a piston push rod, the surface of the piston push rod is provided with a coupling, and the end of the piston push rod away from the main pipe is fixedly connected to a tail buckle; when the piston push rod is used to move in the inner cavity of the main pipe, the air in the inner cavity of the main pipe can be continuously compressed to absorb the energy generated by the bowstring during the shooting process, and the collision and obstruction method can be effectively avoided. Due to the method of simply using parts to collide with obstructions such as a cover at the end of the stroke, great vibration is generated during use, and the compound bow and other bows with large energy generation cannot be used safely.

This invention belongs to the field of seismic design technology for railway bridges, and relates to a seismic analysis method for railway bridges using a variable friction coefficient friction pendulum bearing for seismic isolation and vibration reduction. This method is used to determine the design displacement D of the variable friction coefficient friction pendulum bearing; specifically, it includes the following steps: establishing an equivalent period T based on the design parameters of the variable friction coefficient friction pendulum bearing. eff The relationship between the coefficient of friction and the variable friction coefficient; based on the bridge design conditions, the relationship between the equivalent period and the acceleration response spectrum value is established, and S(T) is obtained. eff Determine the damping adjustment coefficient η; equivalent damping ratio ξ; establish support displacement and equivalent period T. eff S(T) eff By considering the relationship between η and η, and combining it with Newton's iteration process, the final support displacement D is determined. This invention saves time by using analytical expressions for calculation, avoiding tedious modeling, long computation times, and convergence issues compared to the finite element model nonlinear time history analysis method. This allows for rapid evaluation of the seismic performance of different support parameters and structural configurations during the scheme design, parameter optimization, and preliminary design stages.

The invention relates to the technical field of VR teaching, and discloses a teaching method and system based on a VR technology, and the method comprises the steps: constructing a basic virtual construction scene, setting a mode selection attribute, constructing a high-order virtual construction scene, constructing a VR teaching environment, operating the VR teaching environment, and executing a corresponding teaching task. The system corresponds to the method. According to the invention, a vivid training environment is provided for students to carry out practical operation training through the basic virtual construction scene, the applicability of teaching training is improved through multi-mode selection, and the pertinence of teaching training is improved through the special training mode and the high-order virtual construction scene. Closed-loop management of training and assessment is achieved through the teacher assessment plug-in, the training effect of students is improved, applicability and pertinence of teaching training to cooperative training are improved by setting role attributes of multiple persons, and finally combination of theoretical teaching and actual work is achieved. Under the condition of not being limited by the practical training environment area and equipment, students can carry out practical training conveniently and are closely connected with enterprise requirements, and the teaching process based on the VR technology is optimized.

The invention discloses a regional integrated energy multi-target integration scheduling optimization operation method and system, and the method comprises the following steps: obtaining investigation information, and initializing a basic frame of a regional integrated energy system through the investigation information; the investigation information comprises an input energy type, an equipment type and equipment capacity; and establishing an economic planning and operation design model of the regional integrated energy system, and performing operation cost minimization optimization scheduling on the basic framework of the regional integrated energy system by using a two-stage optimization method according to an optimization target and a scheduling target function to obtain an optimal system configuration scheme and an optimal equipment operation scheme of the regional integrated energy system.

The application relates to the field of information technology, in particular to a database full-amount synchronization breakpoint continuation transmission method and system and a storage medium. The method comprises the following steps: selecting a split field of each table of a database, splitting the split field into a plurality of batches, and sequencing the batches; recording a starting value and an ending value and persistently storing the starting value and the ending value to an external storage; establishing a subtask thread pool and a sending window matched with the number of subtask threads; when breakpoint recovery occurs, reading the starting value and the ending value of the split field of the corresponding batch from the external storage; constructing a query condition, querying all data meeting the starting value and the ending value of the split field from a corresponding table of the database, taking the data as a recovered batch, and submitting the recovered batch to a subtask thread for synchronization. The application has the beneficial technical effects that the granularity of retransmission can be reasonably controlled, the balance between the data amount of retransmission and the concurrent amount is achieved, the speed during breakpoint recovery is high, and the application is easy to practice.

The utility model discloses a medical multifunctional prone position inflatable mattress, which relates to the technical field of medical mattresses and comprises an air cushion bed main body. An air cushion cotton cushion is installed on the upper surface of the air cushion bed body, an air pump is installed on the rear surface of the air cushion bed body, an air bag partition module is installed on the left side of the upper surface of the air pump, a pressure regulator is arranged on the right side of the upper surface of the air pump, and an inflation connector is arranged on the right side surface of the air cushion bed body. Compared with an existing common multifunctional medical prone-position mattress, the medical prone-position multifunctional inflatable mattress has the advantages that the first wedge-shaped air bag and the second wedge-shaped air bag are arranged, so that the medical prone-position multifunctional inflatable mattress is convenient to use; the body position of a patient can be assisted to turn over by 15-30 degrees by independently inflating and pressurizing the wedge-shaped air bag I and the wedge-shaped air bag II, so that the pressure of the whole body of the patient is relieved, the chest distress and suffocation symptoms of the patient are relieved and the constipation incidence rate is reduced on the basis that the traditional position of the patient after the spinal cord and spinal column operation is kept.

This invention discloses a recursive correction method for rendezvous and docking sensor data preprocessing. The method utilizes the time-stamped relative measurement data output by the rendezvous and docking sensor mounted on the tracking spacecraft, representing the relative position and attitude between the target and tracking spacecraft. By combining the time-stamped measurement data with the time difference calculated for relative navigation, the absolute attitudes of the tracking and target spacecraft, as well as the transformation matrix from the target spacecraft's orbital frame to its inertial frame, are recursively corrected. Furthermore, the relative measurement data output by the rendezvous and docking sensor undergoes delay compensation preprocessing to reduce the impact of delay on relative navigation accuracy and stability. This recursive correction method for rendezvous and docking sensor data preprocessing can be applied to single-machine data preprocessing of rendezvous and docking sensors in rendezvous and docking missions. The method is simple, the process is clear, it is easy to implement, and it has widespread application value.

A flight test platform oil circuit system that can effectively improve reliability as a whole has the characteristics of anti-bubble oil supply circuit and high efficiency and fuel saving in the refueling circuit. The flight test platform oil circuit system includes a main oil tank formed with an overflow port and a plurality of anti-bubble oil tanks connected in parallel with the main oil tank. The main oil tank is formed with a plurality of oil delivery ports for connecting to the plurality of anti-bubble oil tanks respectively, and each anti-bubble oil tank has three connecting ports for connecting to the corrosion-resistant pipes of the main oil tank, the fuel use end and the fuel supply end, and a corrosion-resistant external joint is installed on it. When supplying oil to the fuel use end, the fuel is pumped from the main oil tank to each anti-bubble oil tank, and then enters the fuel use end from each anti-bubble oil tank. When refueling from the fuel supply end, the fuel is added to the anti-bubble oil tank, and enters the main oil tank after the anti-bubble oil tank is filled. After the main oil tank is filled, the excess fuel returns to the fuel supply end from the overflow port of the main oil tank through the oil circuit, and the refueling is stopped when the feedback signal output by the overflow valve is received.

The invention discloses an interactive music teaching system which comprises a teacher client, a student client and a music teaching platform. The platform is provided with a teacher-student synchronous learning module used for realizing interaction between a teacher and a student client. The synchronous learning module is connected with the intelligent music score following, intelligent error correction and teaching quality management module; the synchronous learning module is provided with a plurality of music teaching sub-modules for realizing teaching requirements of the teacher end and the student end; the intelligent music score following module converts the converted intelligent music score into an intelligent music score which can be operated through a screen of the client; the error correction module is used for identifying whether the student client correctly plays a note in the teaching process and providing a corresponding practice method; and the teaching quality management module adopts a PDCA cyclic quality management method to manage the teaching quality of the student client. According to the invention, it is ensured that students can obtain the same high-quality teaching experience during teaching, and targeted learning targets can be provided according to the characteristics and learning conditions of each student, so that the learning effect is improved.

The utility model discloses a digital forest compass, and belongs to the technical field of forest resource investigation. Comprising a measuring device integrated with a single-point ranging radar, an attitude sensor and an industrial camera; and the tablet computer is connected with the measuring device and is used for processing, recording and storing the data extracted by the measuring device. The utility model also discloses a digital forest compass measurement system, which comprises measurement hardware which is the digital forest compass; and the measuring software consists of embedded software and PC (Personal Computer) end software. The whole device is small in size, convenient to carry and capable of being operated by one person; compared with a traditional measuring instrument, data does not need to be manually recorded, input and corrected, real-time images and virtual sight beads presented by the industrial camera on software replace a sighting telescope of a traditional compass for target alignment, and efficiency is greatly improved. In an efficiency measurement test, the measurement efficiency of the instrument is twice that of a traditional instrument.

The invention provides a method for obtaining an amphoteric strain by removing a symbiotic bacterium Ricktsia in Pingbelly, and belongs to the technical field of arthropod reproductive mode regulation, and the method comprises the following steps: continuously feeding Pingbelly with rifampicin for multiple generations so as to remove Ricktsia carried by Pingbelly and obtain a fertile amphoteric strain. According to the method, the antibiotic rifampicin can be used for stably removing the symbiotic bacteria Ricktsia in the parthenogenetic female Pingetsia to obtain a fertile amphoteric strain, so that a foundation is laid for further regulating and controlling an arthropod reproduction mode by using the Ricktsia and exploring the interaction of the symbiotic bacteria and a host; the method provides a practical path for studying changes of biology, behavioristics, physiology and the like of hosts before and after bacterium removal, and has good application value.

The utility model discloses a teaching practice mold for lumbar puncture, which comprises a trunk simulation block, a plurality of groups of spine simulation blocks are all attached to a spine simulation tube, and the plurality of groups of spine simulation blocks are connected through a ligamentum flavum simulation block; through the design of the spine simulation block, the ligamentum flavum simulation block, the spine simulation tube and other structures and the cooperation of the spine simulation block and the ligamentum flavum simulation block, when a puncture needle punctures the spine simulation block, the puncture needle can be blocked through the spine simulation block, so that students can know the puncture point error and perform lumbar puncture practice again, and the simulation effect is improved; the puncture needle firstly penetrates through the ligamentum flavum when penetrating through and being inserted into the lumbar interstitial space and has a falling feeling after penetrating through the ligamentum flavum, students can know that a puncture point is correct through the falling feeling after the puncture needle penetrates through the ligamentum flavum, the authenticity of simulation of lumbar puncture is improved, the practice of lumbar puncture of the students is facilitated, and the teaching aid is suitable for popularization and application. And the practice effect of students is greatly improved.

The invention discloses a platform and a system for inquiry assessment. A platform for interrogation assessment includes a computing resource and a large model. The large model is configured to receive cue input, where the cue input includes an interrogation conversation between the evaluated person and the virtual standardized patient and interrogation evaluation criteria. The large model is further configured to generate an interrogation evaluation output based on the cue input, where the interrogation evaluation output includes an interrogation evaluation parse associated with an interrogation evaluation criterion.

The invention relates to a model spine positioning device for anesthesia practice, and relates to the technical field of medical anesthesia practice equipment, the model spine positioning device comprises an operation table, a first clamping disc, a second clamping disc, a spine body, a clamping assembly, a dismounting assembly and an adjusting assembly, the first clamping disc is rotatably connected to the operation table through a support; the second clamping disc is arranged right opposite to the first clamping disc, and the second clamping disc is rotationally connected to the operation table. The multiple spine bodies are arranged around the axis direction of the first clamping disc by a circle, and the two ends of each spine body are connected with the first clamping disc and the second clamping disc correspondingly. The number of the clamping assemblies is two, and the two clamping assemblies are located on the first clamping disc and the second clamping disc correspondingly and used for rapidly fixing and detaching the spine body. The dismounting assembly is arranged on the second clamping disc and used for adjusting the distance between the first clamping disc and the second clamping disc. The adjusting assembly is arranged on the second clamping disc and used for selecting different spine bodies. The effect of improving the spine model replacement efficiency is achieved.

The invention discloses a single-soldier tactical low-posture crawling simulation training device which comprises a bottom plate and further comprises a handrail unit arranged at the position, close to the end, of the upper portion of the bottom plate and used for conducting simulation training on the left hand and the right hand of a soldier; the pedal unit comprises a pedal assembly which is arranged at one end, opposite to the handrail unit, of the upper part of the bottom plate and is used for accommodating the left and right feet of a soldier, a foot support assembly which is arranged at the upper end of the pedal assembly and is used for limiting the heel, and a cushion block which is arranged at the lower part of the pedal assembly and is used for supporting the toes and adjusting the angle; the adjusting assembly is used for adjusting the position of the foot support assembly, and the clamping assembly is used for locking the adjusting assembly. Under the elastic force action of the jacking spring, the limiting block brings the clamping block into the clamping groove matched with the size of the foot of the soldier through the telescopic shaft, so that the simulator can be adaptively adjusted according to the size of the foot of the soldier, and the application range is wide.

The application belongs to the technical field of fertilizers, and particularly relates to an environment-friendly urea slow-release fertilizer and a preparation method thereof. The preparation method of the urea slow-release fertilizer comprises the following steps: S1. Modified sodium-based montmorillonite is added to water, and a modified sodium-based montmorillonite suspension is obtained after ultrasonic dispersion; urea and puhuizi polysaccharide are uniformly mixed and preheated to obtain mixed particles; S2. The modified sodium-based montmorillonite suspension is sprayed on the surface of the mixed particles, and the environment-friendly urea slow-release fertilizer is obtained after drying. The method is simple and easy to operate, and the obtained fertilizer has excellent slow-release performance.

The embodiment of the invention provides an oil and gas field economic yield determination method and device, electronic equipment and a storage medium. The method comprises the steps that an economic evaluation model is constructed based on finance and tax systems and contract terms of a resource country where an oil and gas field is located; according to the economic evaluation model, predicting a quasi-economic limit yield curve in a combined period; predicting an oil and gas field yield curve in a combination period; and determining the economic yield of the oil and gas field according to the quasi-economic limit yield curve and the yield curve of the oil and gas field. The method for determining the economic yield of the oil and gas field is easy to practice, and the economic yield of the oil and gas field under different overseas taxes can be conveniently and effectively determined.