99results about How to "Convenient length" patented technology

The invention discloses a hydrodynamic simulation test system and method for scouring protection of a human-shaped submerged dike offshore wind power pile foundation under reciprocating flow, and the method comprises the steps: collecting environment and reciprocating flow data, and building a numerical model of the influence of the reciprocating flow on the pile foundation through the hydrodynamics; numerical simulation is carried out through the numerical model, the human-shaped submerged embankment and an offshore wind power pile foundation model, experimental verification is carried out, the numerical model is optimized, and the optimal angle, length and width of the human-shaped submerged embankment and the optimal distance between the human-shaped submerged embankment and the pile foundation are adopted in an optimized mode, so that scouring of the pile foundation is effectively reduced, and the durability and the protection effect of the human-shaped submerged embankment are improved; the method comprises the following steps: establishing a numerical model of the influence of a reciprocating flow on a pile foundation based on data in S1 and by adopting a fluid dynamics principle in S2, and establishing a physical model of an offshore wind power pile foundation and a human-shaped submerged dike in S3 at the same time; a numerical model and a physical model under a reciprocating flow condition are provided.

The invention provides an ulna olecranon osteotomy guide plate, and relates to the technical field of medical instruments, the ulna olecranon osteotomy guide plate comprises a strip-shaped positioning plate, a fixing mechanism is mounted at the top of the strip-shaped positioning plate, an adjusting mechanism is mounted at the bottom of the strip-shaped positioning plate, a guide mechanism is mounted on the front side of the strip-shaped positioning plate, and the fixing mechanism comprises a positioning block; the positioning mechanism comprises a positioning block, protruding blocks are fixedly connected to the two sides of the positioning block, L-shaped first anti-disengaging blocks are fixedly connected to the positions, close to the top, of the two sides of the protruding blocks, first circular kirschner wire positioning holes are formed in the opposite side faces of the first anti-disengaging blocks in a penetrating mode, the adjusting mechanism comprises a moving block, and sliding adjusting blocks are fixedly connected to the two sides of the moving block; by means of the design, V-shaped osteotomy guiding can be effectively conducted on the ulna olecranon operation, and therefore the success rate of the ulna olecranon osteotomy operation is effectively guaranteed.

The utility model discloses a motorcycle frame detection device, which belongs to the technical field of motorcycles, and comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a fixed plate, the back surface of the fixed plate is fixedly connected with a shell, the front surface of the fixed plate is provided with a sliding opening, and the inner wall of the sliding opening is slidably connected with a sliding block. The motorcycle frame detection device is provided with a driving motor, a threaded rod, a rolling bearing, a threaded cylinder, a push plate, a pointer and a graduated scale, through cooperation of the driving motor and the threaded rod, the threaded cylinder moves on the surface of the threaded rod while the threaded rod rotates in the rolling bearing, and a movable block conveniently drives a sliding block to move in a sliding opening; at the moment, through the connection relation between the sliding block and the push plate, the push plate can be close to the motorcycle frame and make contact with the motorcycle frame conveniently, then the pointer and the graduated scale are matched, the length of the motorcycle frame can be detected conveniently, the mode is easy to operate and convenient to use, and current use is facilitated.

The hidden uncovering dissecting table comprises a storage box and an upper cover plate capable of being wound and bent, an opening is formed in the upper end of the storage box, a supporting guide groove is formed in the side wall of the opening in the upper end of the storage box, an outer shell is arranged on the outer side of the storage box, and a hidden temporary storage space is formed between the outer shell and the storage box; the upper cover plate slides in the supporting guide groove and the hidden temporary storage space, and when the upper cover plate is in an open state, the upper cover plate slides and is hidden in the hidden temporary storage space; when the upper cover plate is in a closed state, the upper cover plate slides into the supporting guide groove from the hidden temporary storage space to seal and cover the upper end opening. When the upper cover plate of the dissecting table is closed, the upper cover plate directly slides into the hidden temporary storage space from the supporting guide groove, so that the space at the two ends of the dissecting table can be saved, and students can conveniently observe and operate the dissecting table.

The invention relates to a paddy field weeding robot path planning optimization method and device, equipment and a medium, and the method comprises the steps: determining the path direction of a shortest barrier-free path based on a preset path direction judgment strategy according to a first barrier-free path set and a corresponding first starting and ending point set, determining a second barrier-free path set, a second starting and ending point set corresponding to the second barrier-free path set, and a starting point and an ending point of each section of obstacle avoidance path; determining a route map according to sampling point data and a communication radius based on a PRM algorithm introduced with an artificial potential field method, and searching a shortest obstacle avoidance path connecting a starting point and an ending point of each section of obstacle avoidance path in the route map by adopting an improved A * graph search algorithm, and sequentially connecting the shortest barrier-free path and the shortest obstacle avoidance path of which the path direction is determined in the second barrier-free path set so as to determine an optimal weeding operation path. According to the invention, effective obstacle avoidance and shortest obstacle avoidance path planning can be realized.

The invention relates to the technical field of welding fixtures, and discloses a welding fixture for lead-acid battery processing, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with two erecting plates, a plurality of clamping plates are arranged between the two erecting plates, and two sliding rods penetrating through the plurality of clamping plates are arranged between the two erecting plates; and the sliding rod is rotationally connected with the erecting plate. According to the plate group compressing and fixing device, the sliding rods, the clamping plates, the limiting supporting pieces and the like are arranged to be used in cooperation, when the plate group compressing and fixing device is used, plate groups needing to be compressed and fixed are firstly placed among the multiple clamping plates, one plate group is placed between every two adjacent clamping plates, and then the air cylinder is started to push the multiple clamping plates to be close to each other, so that the plate groups are clamped by the clamping plates; in this way, a plurality of pole groups can be clamped at a time and can be welded at a time during welding, so that the welding efficiency is improved.

The invention relates to the technical field of semantic analysis, and discloses an intelligent semantic analysis system and method based on a data large model, and the method comprises the steps: converting an audio file into a text, dividing the text into a character group and a word group, numbering the character group and the word group, and extracting repeated content; training a deep learning model to process the character group and the word group to form a standard text; analyzing the audio to determine a language region, obtaining a dialect database and extracting dialect content; combining the dialects, generating a to-be-analyzed text, and performing semantic analysis and classification; and finally, obtaining the expression meaning of the standard text according to the analysis result. The existing marked dialects are combined and substituted into the standard text, so that potential multiple explanations caused by dialect differences in the text can be covered and revealed, all expression meanings existing in the standard text can be obtained, and the process can ensure that any possible expression meaning is not missed, so that the accuracy of the expression meanings is improved. And the final semantic analysis is more comprehensive and accurate.

The utility model relates to the field of automatic stripping and shearing of cables, in particular to an automatic stripping and shearing device for power cables. The technical problems that in the automatic stripping and shearing process of a cable, due to the phenomenon that the shearing effect on the power cable is not ideal, the shearing quality of the power cable is reduced, the shearing efficiency of the power cable is reduced, the practicability is poor, and the phenomenon that the fixing mode of the power cable is not convenient enough exists in the actual use process are solved. And the labor force is increased. According to the technical scheme, the automatic peeling and shearing device for the power cable comprises an operation box; the device further comprises a fixing assembly, a shearing assembly, a display screen and a measuring scale. According to the utility model, a power cable is inserted into the transmission groove and is matched with the transmission roller, so that the cable is transmitted in a crossed rotation manner, and the phenomenon that the cable is not convenient enough to fix is avoided, thereby reducing the labor force, saving the working hours and improving the stripping efficiency of the power cable.

The invention relates to a lamp bead position identification method and device, equipment and a product, and the method comprises the steps: constructing a lamp chain data structure according to the total number of lamp beads to represent the serial position of each lamp bead, and distributing each lamp bead to at least two lamp groups according to the serial position; a special color matching set of each lamp group is determined, and a unique color matching sequence of each lamp bead in the lamp group where the lamp bead is located is coded according to each color in the special color matching set; according to the color matching sequence corresponding to each lamp bead, a synchronous color developing instruction is constructed and sent to a lamp chain, and the lamp beads are driven to synchronously switch light colors; acquiring image frames corresponding to synchronous switching of light colors each time by using a camera unit to form an image sequence, and identifying a color developing sequence of the lamp beads according to the image sequence; and according to the correspondence between the color developing sequence and the color matching sequence, determining the spatial position of the lamp bead in the graphic space constructed by the image plane of the corresponding image sequence. According to the invention, the accuracy and efficiency of identifying the lamp beads can be improved.

The invention relates to the technical field of tea tree planting, in particular to a tea garden annual management method for effectively preventing and controlling tea cake disease. The invention provides a tea garden annual management method for effectively preventing and controlling tea cake disease. The tea garden annual management method comprises the following steps: respectively spraying a compound probiotic agent in March, May and July; a base fertilizer is applied in November. The annual management method for the tea garden has an obvious growth promoting effect on tea trees, and compared with other control groups, tender leaves of the tea trees are brighter green in color, buds are neater, and the length of the tender leaves and the number of the buds are obviously improved. The method also has an obvious prevention and treatment effect on tea cake disease, and the prevention and treatment effect is obviously superior to that of medicaments in the prior art.

The utility model discloses a pin shearing and bending device for coil stock, which comprises a driver, a transmission mechanism, a conveying mechanism, a bending mechanism and a cutting mechanism, the conveying mechanism is used for conveying a workpiece on the coil stock, the bending mechanism and the cutting mechanism are respectively used for bending and cutting pins of the workpiece, and the transmission mechanism comprises a first transmission unit and a second transmission unit. The conveying mechanism is connected with a driving shaft of the driver through the first transmission unit so as to drive a machined part on the conveying mechanism to sequentially penetrate through the bending mechanism and the cutting mechanism, and the bending mechanism and the cutting mechanism are both connected with the driving shaft of the driver through the second transmission unit. The driving mechanism is used for driving the bending mechanism and the cutting mechanism to ascend and descend so as to respectively bend and cut off the pins of the machined part, so that the pins of the machined part are prevented from being manually bent and cut off, and good consistency of the lengths and the bending angles of the pins of the machined part is guaranteed.

This utility model belongs to the technical field of medical devices, specifically relating to a balloon dilatation catheter cutting clamp and a drug coating uniformity testing device. The balloon dilatation catheter cutting clamp of this utility model utilizes the clamping surfaces of a first arc-shaped jaw and a second arc-shaped jaw to achieve precise clamping of drug-eluting balloons of different sizes. It also provides radial and axial cutting gaps for radial and axial cutting of the balloon dilatation catheter, cutting out regularly shaped sample fragments for testing, facilitating the calculation of the area or length of each sample fragment. Because the clamping surfaces are all concave, it ensures that even after axial cutting, the balloon dilatation catheter remains between the two clamping surfaces, preventing sample drop and drug detachment.

The utility model relates to the technical field of wild jujube picking, and discloses a picking device which comprises an outer sleeve, a material collecting net bag, a hollow threaded pipe, a picking box, a picking mechanism, a telescopic adjusting mechanism and a wireless remote controller, the bottom of the outer sleeve is detachably provided with the material collecting net bag, and the top of the outer sleeve is provided with the telescopic adjusting mechanism. A hollow threaded pipe penetrating through the telescopic adjusting mechanism is installed in the outer sleeve, a picking box communicated with the hollow threaded pipe is fixed to the top of the hollow threaded pipe, and a picking mechanism is installed on the picking box. The wild jujube picking and collecting device is convenient to operate, and wild jujubes can be automatically picked off and collected conveniently; the length is convenient to adjust, and wild jujubes with different heights can be conveniently picked.

The invention discloses a high and steep slope roadbed reinforcement and gravity type retaining wall combined supporting structure and a design method, the supporting structure comprises an embankment supporting structure and a drainage system, the embankment supporting structure comprises a gravity type retaining wall, the gravity type retaining wall is arranged on a moderately weathered slate of a slope toe, a reinforcement area is arranged above the gravity type retaining wall, and the drainage system is arranged on the gravity type retaining wall. The reinforcement area comprises a non-modified reinforcement area and a modified reinforcement area from inside to outside, and reinforcement materials are laid in the reinforcement area in a layered mode. A reinforced modified soil cushion layer is horizontally laid between the bottom of the reinforced area and the top of the gravity type retaining wall, and rib materials are laid in the reinforced modified soil cushion layer in a full-section mode. Identifying a damage mode of overall instability; and the rib material length and the retaining wall height are optimized according to different failure modes. Based on the cooperative supporting effect between the modified reinforcement and the gravity type retaining wall, the overall stability of the combined structure is improved, the length of the reinforcement and the height of the retaining wall are optimized, the construction cost is reduced, and the dual purposes of cost saving and engineering performance optimization are achieved.

The present invention provides a roller profile for reducing the internal thread of a steel pipe rolled by an Assel unit. An entrance cone area, a shoulder area and a rolling area are sequentially arranged from the entrance side to the exit side of the roller. The entrance cone area consists of a first entrance cone area and a second entrance cone area, wherein the first entrance cone area is located between the second entrance cone area and the entrance end of the roller, wherein the ratio of the length of the first entrance cone area along the roller axis to the length of the second entrance cone area along the roller axis is 7:10, and the entrance cone angle α1 of the first entrance cone area differs from the entrance cone angle α2 of the second entrance cone area by 1°; the ratio of the length of the rolling area along the roller axis to the length of the second entrance cone area along the roller axis is 4:5; the present invention solves the technical problem that the spiral concave-convex phenomenon on the inner surface of a steel pipe affects the appearance of the steel pipe and seriously affects the use by users.

The invention discloses application of an AgKATA gene in optimization of cotton fiber quality, and belongs to the technical field of genetic engineering. According to the invention, the expression of AgKATA is controlled by using a promoter E6 specifically expressed by fibers, a transgenic cotton strain is obtained by using an agrobacterium transformation method, when identification and analysis are carried out on transgenic cotton T0-generation plants with pE6 excess AgKATA, it is found that excess exogenous AgKATA genes can reduce the content of hydrogen peroxide in cotton fiber cells, and after mature fibers are observed, it is found that the content of hydrogen peroxide in cotton fiber cells can be reduced. The mature fiber length of the E6-KATA-1 single plant with a higher transcriptional level is longer than that of the E6-KATA-18 single plant with a lower transcriptional level, and the cell wall of the E6-KATA-1 single plant is obviously thinned.

A ceiling shower head comprises an inner fixing base, a rope fixing and adjusting device, a rope fixing device, a lifting rope, a ceiling fixing base, a detachable locking device, an inner top cover, a cylindrical body, a water spraying body and a water inlet assembly, the inner fixing base comprises a hanging cavity with an upper opening, a water guide pipe hole and an annular base plate, and the rope fixing and adjusting device is arranged on a bottom plate of the hanging cavity; the rope fixing device is arranged on the inner top cover, the lower end of the lifting rope is fixed to the rope fixing device, the upper end of the lifting rope is connected with the rope fixing and adjusting device, and the detachable locking device is arranged on the inner top cover and locked with a bottom plate of the fixing cavity. The lifting rope penetrates through the receding hole, the inner top cover is fixed in the upper portion of the cylindrical body, the water spraying body is arranged at the lower end of the cylindrical body, the upper end of the water inlet assembly extends out of the inner top cover, and the lower end of the water inlet assembly is communicated with the water spraying body. The length of the lifting rope is conveniently adjusted through the rope fixing and adjusting device, and the lifting rope is connected with the inner cover plate to realize load bearing; the ceiling fixing base is fixed to a ceiling, the inner cover plate and the ceiling fixing base are connected through a detachable locking device to achieve load bearing, and the water spraying body is horizontal.

The utility model provides an alarm device and an alarm system, the alarm device comprises a base, an outer cover and a function part, the outer cover and the base are fixedly connected, and a containing cavity is defined by the outer cover and the base together. The function part is arranged in the containing cavity and comprises a wireless communication module, a control module, at least one alarm module and an external power supply module, and the wireless communication module can be in wireless communication with external equipment. And the control module communicates with the wireless communication module. And the alarm module communicates with the control module and sends out an alarm signal under the control of the control module. And the external power supply module is connected to an external power supply and is electrically connected with the wireless communication module, the control module and the alarm module. According to the embodiment of the utility model, the cable in wired connection is divided into independent wireless communication function and power supply function, and a plurality of alarm devices in the alarm system are connected without using the cable, so that the wiring is simplified, the cost control is facilitated, the limitation of the length of the cable is avoided, and the coverage range of the alarm system can be expanded.

The invention discloses a trajectory prediction method and system based on a hybrid expert model, a medium and a product, and relates to the field of data processing systems specially suitable for the prediction purpose, and the method comprises the steps: obtaining an observation trajectory of any length; a preset encoder is utilized to encode the observation track, and track feature representation is obtained; inputting the track feature representation into a gating network, and calculating an optimal observation length; according to the optimal observation length, activating a corresponding target expert module in a preset hybrid expert model, and performing optimization processing on the observation trajectory to obtain an optimized trajectory; the optimization processing comprises the following steps: comparing the current length of the observation track with the optimal observation length; if the observation length is greater than or equal to the optimal observation length, executing observation pruning; if the observation length is smaller than the optimal observation length, reverse prediction is executed; and inputting the optimized trajectory into the trajectory prediction backbone network to obtain a future trajectory prediction result. By implementing the method, the trajectory prediction accuracy under the observation condition of any length can be improved.

The invention provides a thermal management control method and system for a CTP battery pack, and the method comprises the following steps: constructing a temperature control structure model of the CTP battery pack, the temperature control structure model comprises a plurality of liquid cooling plates, each liquid cooling plate is internally provided with a flow blocking strip, and the flow blocking strips are used for changing the trend of a heat exchange medium; a flow channel in each liquid cooling plate forms reciprocating broken line type water jacket circulation, and the initial length of a flow blocking strip and the initial aperture of a water inlet and a water outlet of each liquid cooling plate are preset; acquiring parameter data of the CTP battery pack for triggering temperature control starting in a continuous overcharge state, simulating the temperature control structure model according to the parameter data, and acquiring a thermal simulation cloud picture of each liquid cooling plate area; according to the method, through a built temperature control structure model of the CTP battery pack, the length of a flow blocking strip and the aperture of an inlet and an outlet are adjusted according to simulation, the flowing path and flow of cooling liquid in a liquid cooling plate are optimized, temperature distribution of the battery pack is improved, the phenomenon of local overheating or supercooling is avoided, and the service life of the battery pack is prolonged. And a thermal management control strategy is formulated for the temperature control structure to ensure that the battery cell works in an optimal temperature interval, so that the thermal management performance of the battery pack is improved.

This invention discloses a variable cross-section tail wing suitable for FSAE racing cars, comprising a variable cross-section wing assembly, an upper sparsity wing, a first lower sparsity wing, a second lower sparsity wing, and endplates. The variable cross-section wing assembly consists of a main wing, a first flap, and a second flap; all three wings are variable cross-section wings. The variable cross-section wing is a small, continuous section raised at mid-span. The main wing, the first flap, and the second flap are sequentially mounted between the two endplates, roughly diagonally distributed, with the second flap featuring a grunt flap. The upper sparsity wing is mounted on the corner of the endplate, while the first and second lower sparsity wings are located near the bottom of the endplate. There are two endplates, symmetrically mounted on both sides, each featuring louvers, an outer edge flange, a leading edge notch, a trailing edge notch, and guide strips. The variable cross-section wing can reduce the turbulence caused by the headrest and minimize airflow slippage in the spanwise direction, resulting in a more uniform pressure distribution on the wing surface. The louver structure also reduces drag.

The cutting pliers with the anti-skid function comprise a first handle and a second handle, one end of the first handle is fixedly connected with a first connecting block, the side, away from the first handle, of the first connecting block is fixedly connected with a first connecting ring, and the outer wall of the first connecting ring is fixedly connected with a first pliers head; one end of the second handle is fixedly connected with a second connecting block, the side, away from the second handle, of the second connecting block is fixedly connected with a second connecting ring, the outer wall of the first connecting ring is fixedly connected with a second tong head, and the opposite sides of the first tong head and the second tong head are fixedly connected with a plurality of evenly-distributed anti-skid teeth; by means of the multiple anti-skid teeth on the first plier head and the second plier head, a steel wire or a screw needing to be clamped can be stably clamped, sliding is prevented, the cutting pliers can be stably connected with the hand of an operator in cooperation with use of an anti-falling plate and a spring, the cutting pliers are prevented from falling off from the hand, and the working efficiency is prevented from being affected; and great convenience is provided for an operator.

The present invention provides a multi-threaded program implementation method, device and related equipment, which are applied to the field of software development technology. The method comprises: obtaining a call dependency graph according to an abstract syntax tree of a target function, wherein the call dependency graph includes the dependency relationship between statements of the target function; splitting the call dependency graph to obtain a thread pool including multiple threads; taking out threads whose length is less than a set value from the thread pool and combining them to obtain a combined thread; and adding the combined thread to the thread pool when the length of the combined thread is greater than or equal to the set value. The present invention can improve the efficiency of obtaining a multi-threaded program.

The invention discloses application of polaprezinc in preparation of a medicine for relieving gastrointestinal toxicity caused by chemotherapy, and belongs to the technical field of medicine. Polaprezinc is provided for relieving gastrointestinal toxicity caused by irinotecan for the first time, can effectively improve mouse small intestine length shortening caused by irinotecan, meanwhile can reduce intestinal inflammation and relieve mouse ileum injury caused by irinotecan, effectively improves the intestinal barrier function of mice, and can be used for preparing medicines for preventing and treating irinotecan. According to the present invention, the compound has the significant alleviation effect on the intestinal toxicity caused by irinotecan, can be used for preparing the drug for alleviating the gastrointestinal toxicity caused by chemotherapy, and is expected to alleviate the chemotherapy-related gastrointestinal toxicity by combining the application of polaprezinc for intervention in the tumor chemotherapy process, such that the new drug choice is provided for the clinical alleviation of the chemotherapy-induced intestinal adverse reaction.

The utility model discloses a screw with a bidirectional fixing structure, which comprises an outer pipe and an inner screw rod arranged in the outer pipe, and the outer pipe is a cylinder with two open ends; an outer conical part is arranged at the bottom of the outer pipe and is integrally connected with the outer pipe; a hollow through channel is formed in the outer conical part and is communicated with an inner cavity of the outer pipe; left-hand threads are arranged inside the outer side of the outer pipe, and right-hand threads are arranged on the inner diameter face of the outer pipe. The top of the outer pipe is provided with a nut; the inner screw moves up and down in the axial direction of the outer pipe, the inner screw is composed of a screw body and an inner conical part, the screw body is a cylinder, and the inner conical part is arranged at the bottom of the screw body; and right-hand threads matched with the right-hand threads on the inner diameter surface of the outer pipe are arranged on the outer side of the screw. After the outer pipe main body rotates to enter the inner part, the inner screw rod is rotated in the reverse direction, and meanwhile, as the outer pipe is arranged to rotate leftwards and the inner screw rod is arranged to rotate rightwards, one screw can be rotated and fixed in two directions and is not easy to fall off, and the tightness of connection is improved.

The present disclosure provides a multi-band antenna device (100), the multi-band antenna device (100) comprising a first dipole radiating element (104), a second radiating element (106) and a metasurface superstrate (MSS) structure (108). The first dipole radiating element is used to operate in a first frequency band and is arranged on an upper plane of a support structure (112) at a first distance from a reflector (110). The second radiating element is used to operate in a second frequency band and is arranged on a lower plane of the support structure at a second distance from the reflector. The second distance is smaller than the first distance. The second frequency band is higher than the first frequency band. The MSS structure is arranged in a region within an arm of the first dipole radiating element and enhances the performance of the second radiating element to increase the directivity and gain of the multi-band antenna device.

The utility model discloses a water area salvaging device which comprises a salvaging head used for salvaging floating objects on water. The telescopic rod comprises a first hollow rod, a second hollow rod and a locking structure, a fishing head is installed at one end of the first hollow rod, the radial outer surface of the first hollow rod is matched with the inner surface of the second hollow rod, the second hollow rod and the first hollow rod can slide relatively, and the locking structure is arranged between the first hollow rod and the second hollow rod; the locking structure is used for connecting and fixing the second hollow rod and the first hollow rod; the floating body is connected to the side, away from the first hollow rod, of the fishing head, and the floating body is used for preventing the fishing head from sinking into water. According to the utility model, the problems of operation risk and storage caused by insufficient or overlong length of the traditional handheld rod are solved, and the operation difficulty is reduced.

The present invention relates to the technical field of rose cultivation. Provided are a plant growth regulator for preventing the occurrence of cut rose flower necrosis and a preparation method. The raw materials of the plant growth regulator include: naphthylacetic acid mother solution, cytokinin mother solution, fluridone mother solution, cyprodinil mother solution and surfactant. The plant growth regulator provided by the present invention can effectively promote the growth rate of rose receptacles and cell division, regulate the growth and development of apical meristems, thereby greatly reducing the incidence of cut rose flower necrosis and improving product quality. In addition, the plant growth regulator provided by the present invention has a simple preparation process, rapid effect, low cost, environmental protection and safety, and obvious effect, and can effectively shorten the receptacle length, reduce the number of petals, and improve the quality of cut flowers.

The invention relates to a semi-quantitative real-time monitoring unmanned aerial vehicle for medium-low-altitude wind power and wind quantity. The semi-quantitative real-time monitoring unmanned aerial vehicle comprises a rotor unmanned aerial vehicle, a remote controller and a hanging swing belt The rotor unmanned aerial vehicle is connected with the hanging swing belt through the hanging ring below the belly, and a reliable indication platform can be provided for monitoring in any middle and low altitude airspace under a certain wind power condition; according to the hanging pendulum belt, wind power in different sizes and directions is correspondingly indicated through the variable density design, the situation that the hanging pendulum belt is drawn into a rotor wing of the unmanned aerial vehicle is avoided, real-time monitoring of the wind power in the airspace is guaranteed, and then the air volume in the corresponding time period of the airspace is estimated; in addition, the monitoring space-time range can be expanded by means of LED upgrading, image upgrading, multi-machine array and the like.