57results about How to "Applicable use requirements" patented technology

The invention relates to an exercise device, in particular to a multifunctional physical exercise device. The device comprises an arm exercise mechanism, a ladder machine case, an adjustable pedal plate mechanism, a seat, a leg exercise mechanism, a machine case and storage drawer mechanisms; by means of the device, the arms can be exercised, the exercise strength of the arms can be changed according to the exercise requirement of people, and the using requirements of people of different heights can be met; the device is provided with the adjustable pedal plate, the requirements of people of different leg lengths for leg exercise can be met, the legs can be exercised by the device, and the exercise strength of the legs can be changed according to the exercise requirement of people; the device is provided with a leg exercise assistance structure, the exercise strength can be alleviated, and articles required for fitness of people can be placed in the device. The arm exercise mechanism is connected with the ladder machine case and the adjustable pedal plate mechanism, the seat is fixedly connected with the top of the leg exercise mechanism, the left end of the leg exercise mechanismis connected with the machine case, and the storage drawer mechanisms are connected with the machine case.

A process for making the polylactic acid series polymers have the shape memory effect after they are cold-shaped includes die pressing and annealing. After the material is deformed at ordinary temp, its original shape can be restored by heating it.

The invention discloses a coder interface testing device based on a Nios II processor. The device comprises an FPGA (Field Programmable Gate Array) chip, an incremental TTL (Transistor Transistor Logic) interface module, an incremental sine and cosine interface module, an absolute interface module, a display screen and a PS (Poly Styrene) / 2 interface device, wherein the incremental TTL interface module, an incremental sine and cosine interface module, an absolute interface module, a display screen and a PS / 2 (Purple Green) interface device are connected with the FPGA chip; the incremental TTL interface module is used for being connected with the coder of an incremental TTL interface type, the incremental sine and cosine interface module is used for being connected with the coder of an incremental sine and cosine interface type, the absolute interface module is used for being connected with an absolute coder so that a serial digital signal output by the absolute interface module is transformed between a differential signal and a single-end signal, and the FPGA chip comprises a Nios II processor embedded in a chip, and the Nios II processor is used for processing an input signal and realizing the testing of coder interfaces. The Nios II processor-based coder interface testing device can be used for solving the problems that the coder interfaces in the existing coder testing platform can not be mutually compatible and are inconveniently carried, and has the characteristics of low cost, strong function, small volume, compact structure and high integration.

The invention provides a passivated quantum dot. The passivated quantum dot comprises a quantum dot body and a passivation layer covering the surface of the quantum dot body, wherein the passivation layer is an inorganic compound membrane layer formed by carrying out chemical reaction on halide ions and positive ions on the surface of the quantum dot body. A preparation method of the passivated quantum dot includes the steps of providing a positive ion precursor and a negative ion precursor and preparing the quantum dot body; preparing halogen gas, dissolving the halogen gas into an organic solvent protected by vacuum or inert gas and preparing a halogen stock solution; and dissolving the quantum dot body to form a quantum dot body solution, adding the halogen stock solution into the quantum dot body solution to form a reaction system, stirring the mixed solutions for generating reaction, and purifying the mixed solutions to obtain the passivated quantum dot.

The invention discloses a single-phase intelligent watt-hour meter with a carrier meter reading module to solve the problems that the conventional watt-hour meter cannot settle the bidirectional electric energy, cannot be read remotely and cannot monitor electric energy quality. The watt-hour meter comprises an electric energy signal sampling module, a single-phase three-wire metering unit, and a microcontroller, which are connected in turn; and the microcontroller calculates positive electric energy E1, negative electric energy E2 and net electric energy E. The watt-hour meter also comprises a liquid crystal display (LCD) module, a power module, a real time clock (RTC) and backup battery module, a pulse output module, a positive electric energy storage unit, a negative electric energy storage unit, a net electric energy storage unit and a carrier communication module, which are respectively connected with the microcontroller, wherein the carrier communication module is linked with a remote meter reading device through a carrier communication channel to remotely read the meter. The watt-hour meter has the following functions: the watt-hour meter can respectively accumulatively meter and store positive and negative time-sharing electric energy, has the real-time measuring function, load recording function, remote meter reading function and electric energy quality monitoring and analyzing function, and can provide a household intelligent interface.

The invention discloses a buffer oil cylinder. The buffer oil cylinder comprises a cylinder body, a piston rod and a piston, wherein the two ends of the cylinder body are provided with oil holes A, B, D and E; a valve block is arranged on the top of the cylinder body; oil holes B1, A1, D1 and E1 are formed on the front surface of the valve block; oil holes C and F are formed on the back surface of the valve block; the oil holes B, A, D and E are connected with the oil holes B1, A1, D1 and E1 through an oil pipe 1, an oil pipe 2, an oil pipe 3 and an oil pipe 4 respectively; the oil holes A1 and C are communicated and the oil holes D1 and F are communicated in the valve block; a columnar shell 1 and a columnar shell 2 are arranged on the top of the valve block; a cone valve 1 is arranged in the columnar shell 1; a rotary knob 1 is arranged on the top of the columnar shell 1; a cone valve 2 is arranged in the columnar shell 2; a rotary knob 2 is arranged on the top of the columnar shell2; and the two sides of the valve block are provided with a one-way valve 1 and a one-way valve 2. The buffer oil cylinder has a novel and reasonable design, long service life and a good using effect, is convenient to realize, use, operate and popularize, and is not limited by space during installation.

The invention discloses a single-phase intelligent electrical energy meter with a wireless meter reading module, which solves the problems that the conventional electrical energy meter cannot settle the electrical energy of bidirectional power supply, remotely read meter or monitor the quality of the electrical energy. The electrical energy meter comprises an electrical energy signal acquisition module, a single-phase three-wire metering unit and a microcontroller connected in turn, wherein the microcontroller calculates forward electrical energy E1, reverse electrical energy E2 and net electrical energy E; and the electrical energy meter also comprises a liquid crystal display (LCD) module, a power supply module, a real time clock (RTC) and backup battery module, a pulse output module, a forward electrical energy storage, a reverse electrical energy storage, a net electrical energy storage and a wireless communication module connected with the microcontroller respectively, wherein the wireless communication module is linked with a remote meter reading device through a wireless communication channel to realize remote meter reading. The electrical energy meter has the following functions of: respective accumulation and metering of forward and reverse time division electrical energy, real-time measurement, load recording, remote meter reading, monitoring and analysis of electrical energy quality, and supply of household intelligent interfaces.

The invention discloses a lignin-humic acid-based dispersing agent, a preparation method and applications thereof. The lignin-humic acid-based dispersing agent is prepared from the following components in parts by weight: 30 to 70 parts of lignin, 30 to 70 parts of humic acid, 1 to 30 parts of a sulfonating agent and 5 to 50 parts of a cross-linking agent. After the lignin-humic acid-based dispersing agent is applied, easy-to-flow, clean and stable coal water slurry can be obtained. The lignin-humic acid-based dispersing agent has the advantages of excellent performance and high performance price ratio and completely meets the national coal water slurry standard.

The invention relates to the technical field of engineering structure vibration reduction, in particular to a double-layer pyramid type light vibration reduction metamaterial lattice structure. The metamaterial lattice structure is composed of unit cells arranged in a two-dimensionally periodic manner, and the unit cells are generatively designed based on a double-layer pyramid type lattice structure. Each unit cell comprises an upper panel, a lower panel, eight double-layer pyramid type sandwich round bars arranged between upper panel and the lower panel, and a spherical resonance unit embedded in the intersection point of the eight double-layer pyramid type sandwich round bars, wherein the upper panel, the lower panel, the double-layer pyramid type sandwich round bars and the spherical resonance unit are all made of a glass fiber reinforced (GFR) nylon material. By embedding the periodically arranged round resonance units into the double-layer pyramid type light vibration reduction metamaterial lattice structure to generate a broadband gap, the purpose of vibration reduction is achieved; and the structure has the advantages of integrating light weight and vibration reduction functions, having a wide vibration reduction frequency range, being easy to manufacture, having good bearing capacity, avoiding changing of the external geometrical characteristics of the structure and the like.

The invention discloses a scindapsus aureus cultivation pot with an auxiliary structure. The scindapsus aureus cultivation pot with the auxiliary structure comprises an inner cultivation pot and an outer cultivation pot. The inner cultivation pot is located in the outer cultivation pot. The upper sides of the left and right ends of the inner cultivation pot are fixedly connected to one side of a connecting sideboard. The middle of the upper end of the sideboard is provided with a bulge. The mutual adjacent ends of the bulge and the sideboard are provided with openings, and an active cavity isformed between two openings. Two sides of the upper end of the outer cultivation pot are fixedly connected to the lower end of an inserting block. The upper end of the inserting block passes through an inserting hole of the lower end of the outer cultivation pot, and the upper end of the inserting block is extended into the active cavity. The middle of the top of the active cavity is fixedly connected to one end of a support rod. One side of the other end of the support rod is fixedly connected to one end of a first rotation shaft, and the other end of the first rotation shaft successively passes through the centers of a first connecting rod and a second connecting rod. The installed first connecting rod and second connecting rod are used for limiting the position of the inserting block. Water in the outer cultivation pot is conveniently replaced, and the growth quality of the scindapsus aureus is improved in the great degree.

The invention provides a vehicle-mounted display screen support adjusting device, which comprises a shell unit, a conversion unit and an adjusting assembly, wherein the shell unit comprises symmetrically-arranged fixing plates and an accommodating box arranged at the outer ends of the fixing plates; the conversion unit comprises a sliding assembly and an overturning assembly arranged on the innerside of the fixing plate, and the sliding assembly is connected with the accommodating box; and the adjusting unit is arranged in the accommodating box and comprises an adjusting assembly connected with the overturning assembly, and the other end of the adjusting assembly is connected with the limiting assembly. The device has the beneficial effects that a support of a vehicle-mounted display screen is adjusted, so that the spatial position of the vehicle-mounted display screen can be adjusted to a certain extent, the space volume can be effectively saved during adjustment and storage, and thedevice can meet the use requirements of drivers with different postures.

The invention relates to the technical field of engineering structure vibration reduction, in particular to a low-frequency vibration reduction light metamaterial lattice structure and a manufacturingmethod thereof. The metamaterial lattice structure is composed of two-dimensional periodically-arranged unit cells, and each unit cell comprises a base structure and a cuboid resonance unit embeddedinto the base structure, wherein the base body structure comprises an upper panel, a lower panel and an internal pyramid-shaped sandwich structure, the cuboid resonance units are located in the internal pyramid-shaped sandwich structure, each unit is composed of an upper part and a lower part, the upper part is made of a hard metal material, and the lower part is made of a glass fiber reinforced (GFR) nylon material. According to the invention, a broadband gap in a low-frequency range is generated by designing periodically arranged resonance unit structures, so that the purpose of efficient vibration reduction is achieved. The vibration damper has the characteristics that the bearing and vibration damping functions are integrated, the vibration damping frequency range is wide, the externalgeometrical characteristics of the structure are not changed, and the structure vibration can be effectively suppressed in a low-frequency range.

The invention provides an enhanced explosion-proof coating and a preparation method and application thereof. The coating is formed by spraying a material containing a polyurea material and a fiber material, the polyurea material comprises a component A and a component B. The component A is a prepolymer obtained by prepolymerizing raw materials containing isocyanate, polyol, a flame retardant and an optional diluent, and the component B contains amine-terminated polyether, a chain extender, a flame retardant and optional other auxiliaries. Compared with other anti-explosion coatings, the explosion-proof coating has the advantages that the tearing strength is greatly improved; the coating has good adhesive force with substrates such as concrete and steel, and is not layered; the coating can adapt to the low-temperature environment of -36 DEG C, and the service life exceeds 20 years.

The invention discloses a fabricated steel structure residence system and a construction method thereof. The fabricated steel structure residence system includes a vertical unit, horizontal beams anda fabricated wall panel; the vertical unit includes a concrete-filled steel tube single column, a corrugated plate shear wall unit and a short-limb special-shaped corrugated plate shear wall unit; thecorrugated plate shear wall unit and the short-limb special-shaped corrugated plate shear wall unit include concrete-filled steel tube stand columns, connecting beams and transverse rib corrugated plates, and restraint frames of corrugated plates are formed by the concrete-filled steel tube columns in the units and the connecting beams at the floor heights; the horizontal beams are connected withvertical members to form an overall structure; and the fabricated wall panel is fixed between the upper layer horizontal beams and the lower horizontal beams by adopting bolts. According to the fabricated steel structure residence system, the small size concrete-filled steel tube columns are adopted as vertical load bearing members, the members are filled with concrete in a factory, and the corrugated plate shear walls provide structural lateral resistance; the fabricated steel structure residence system and the construction method have the beneficial effects that full prefabrication of mainstructural members can be realized, and site construction processes are reduced; the corrugated plate wall can reduce the use amount of steel and ensures lateral resistance; and the vertical members can be hidden in a wall body, and the residence building use demands are met.

The invention relates to the technical field of the smart electric meter, to a single-phase smart electric meter with a wireless meter reading function. The single-phase smart electric meter comprises an electric power signal sampling module, a single-phase three-wire metering unit, and a micro controller, wherein the electric power signal sampling module, the single-phase three-wire metering unit, and the micro controller are successively connected; and the micro controller calculates the positive electric energy E1, reverse electric energy E2, and net electric energy E. In addition, the single-phase smart electric meter also includes an LCD display module, a power module, an RTC and backup battery module, a pulse output module, a positive electric energy storage unit, a reverse electric energy storage unit, a net electric energy storage and a wireless communication module, wherein the LCD display module, the power module, the RTC and backup battery module, the pulse output module, the positive electric energy storage unit, the reverse electric energy storage unit, the net electric energy storage and the wireless communication module are connected with the micro controller. The wireless communication module is linked to a remote meter reading device by a wireless communication channel, thereby realizing remote meter reading. According to the invention, respective accumulation, metering, and storage of the positive and reverse time-sharing electric energy as well as functions of real-time measurement, load recording, and remote meter reading and the like can be realized. And problems that the existing electric meter can not carry out bidirectional power supply energy settlement, remote meter reading, and electric energy quality monitoring can be solved.

The present invention discloses an automatic gas stove oil fume adsorption method. The gas stove comprises a stove body panel and a burner, wherein the middle portion of the stove body panel is provided with a chamber recessing downward and presenting a conical shape, the stove body panel is provided with a U-shaped groove, the chamber is communicated to the outside through the U-shaped groove, the bottom portion of the chamber is provided with the burner, a plurality of oil fume adsorption holes and a fan are arranged, the oil fume adsorption holes are distributed on the inner wall of the chamber in an annular array manner, and the fan is arranged inside the stove body panel. According to the present invention, the chamber recessing downward and presenting the conical shape is arranged on the stove body panel, and is communicated to the outside through the U-shaped groove, the bottom portion of the chamber is provided with the burning system, and the plurality of the oil fume adsorption holes are arranged on the upper edge of the inner wall of the chamber; during the use, the pot is placed on the bottom portion of the chamber, the pot handle can be placed inside the U-shaped groove, the burning system starts strike fire under the adjustment of the switch, and the fan starts the adsorption of the generated oil fume through the plurality of the oil fume adsorption holes; and the arrangement of the separate oil fume exhaust ventilator on the gas stove is eliminated, such that the occupation space is reduced, and the cost is reduced.

The invention discloses a soft bag filling device, and relates to the technical field of automatic packaging. The soft bag filling device comprises a guiding device and a filling device; the guiding device comprises a plurality of guiding rods, the filling device comprises a plurality of filling heads, the plurality of guiding rods and the plurality of filling heads are arranged in a line, and onefilling head is arranged between every two adjacent guiding rods; and guiding lines are formed at the bottom ends of the plurality of guide rods, and the bottom ends of the filling heads can ascend to the positions above the guiding lines or descend to the positions below the guiding lines. The soft bag filling device can be perfectly refitted to an existing automatic filling machine, and the production requirements of the filling heads with different types and specifications for multi-split bag product filling are met.

A military truck portable elevator comprises a door frame and a tail plate and further comprises a truck butt joint frame used for being fixed to the tail of a military truck. The door frame comprisesa beam and two door columns, the rear portion of the beam is detachably connected with the truck butt joint frame, and the two door columns are arranged at the left end and the right end of the beamcorrespondingly. Lower landing legs capable of stretching and contracting up and down are arranged at the lower portions of the door columns, the lower portions of the lower landing legs are detachably connected with wheel frames, and wheels are arranged at the bottoms of the wheel frames. The door frame can be rapidly connected with the military truck or separated from the military truck throughthe truck butt joint frame, the lifting tail plate on the door frame can be used for conducting material loading and unloading for the military truck, welding of the tail plate to the military truck is not needed, and the usage requirement of the military truck is met. The door frame can move, transferring is convenient, and one door frame can be matched with multiple military trucks to be used. After being folded and contracted, the military truck portable elevator is fixed to the rear portion of the military truck, and transportation is conducted along with the military truck.

The invention belongs to the technical field of heat shrink films, and particularly relates to a low-shrinkage polyester shrink film and a preparation method thereof. The low-shrinkage polyester shrink film contains diacid components and diol components, and the diacid components comprise 50-95% of terephthalic acid, 5-20% of modified component adipic acid and 0-30% of other diacids according to the total mole of the diacid components. The maximum shrinkage force of the low-shrinkage polyester shrink film is less than or equal to 3N, the shrinkage force curve at various temperatures is slowly improved, and the low-shrinkage polyester shrink film is suitable for use requirements of bottles with various thicknesses and meets the development requirements of green products. According to the low-shrinkage polyester shrink film, the shrinkage force can be greatly reduced in various shrinkage rate ranges. The preparation method of the low-shrinkage polyester shrink film is simple and easy to implement and beneficial to industrial production.

The invention discloses a preparation method of antibacterial and anti-inflammatory children skincare talcum powder. The method comprises the following steps: carrying out cage type silsesquioxane modification treatment on corn starch and pearl powder and preparing a functional sustained-release capsule; carrying out uniform stirring and mixing; and then carrying out sieving by using a screen with50 to 100 meshes to prepare antibacterial and anti-inflammatory children skincare talcum powder. According to the invention, because of compounding of cage type polyhedral silsesquioxane modified corn starch and the modified pearl powder. The skin is smooth and dry and pores are not blocked, so that prickly heat is effectively prevented from appearing on the skin of infants and young children; and because of the effect of the functional sustained-release capsule, active ingredients of the plant extract in the talcum powder are slowly released, so that the skin of infants continuously plays arole in realizing antisepsis and anti-inflammation effects for long time.

The invention discloses a pneumatic valve body. The pneumatic valve body comprises a shell, at least two cavities communicated with each other are arranged in the shell, communicating pipes used for being inserted into an external air path are arranged on the cavities in a communicating mode, air outlet holes distributed in an array mode are formed in the shell, a circuit piece is arranged in the shell, at least two coil assemblies are arranged on the circuit piece, a valve moving assembly is arranged on each coil assembly, a magnetism isolating film is arranged between each coil assembly and the corresponding valve moving assembly, each valve moving assembly is attracted and separated through power-on and power-off of the corresponding coil assembly, air discharging of the air outlet holes is controlled, the cavities correspond to the coil assemblies in a one-to-one mode, and more air outlet holes are formed in a valve body base per unit length. According to the valve body, the at least two coil assemblies and corresponding air holes are arranged in the shell, the installation space of the pneumatic valve body is reduced, more air outlet holes can be formed in the base of unit length, the installation number of the pneumatic valve body is reduced, and the installation efficiency is improved.

The invention discloses a food retention removing preparation as well as a preparation method and application thereof. The food retention removing preparation is prepared from the following raw materials in parts by weight: 1-10 parts of malt, 1-30 parts of hawthorn fruits, 1-15 parts of radish seeds, 1-10 parts of pericarpium citri reticulatae, 1-15 parts of fructus cannabis, 1-15 parts of lotusleaves and 1-15 parts of semen cassiae. The raw materials of the food retention removing preparation are medicinal and edible materials, so that the food retention removing preparation is safe and free of toxic and side effects, causes small gastrointestinal injury, can tonify the spleen, invigorate the stomach and help digestion, has a function of relaxing bowels, can fundamentally solve the problem of food retention and has a better food retention removing effect. The preparation method of the food retention removing preparation is simple and convenient to operate and easy for industrial mass production, and an adopted microwave vacuum low-temperature drying technology has higher drying speed and higher working efficiency.

The invention discloses a preparation method of nitrogen trifluoride and nitrogen trifluoride mixed gas. The method disclosed by the invention comprises the following steps: carrying out reaction on ammonia gas and fluorine-containing mixed gas in a fluorination reactor to generate a mixture containing hydrogen fluoride, nitrogen trifluoride and inert gas; the fluorine-containing mixed gas is mixed gas of fluorine gas and inert gas, the inert gas is one or a mixture of more than two of nitrogen gas, helium gas and neon gas, and the mass percentage of the ammonia gas in the mixed gas of the ammonia gas and the fluorine-containing mixed gas is 0-5.2% or 50.2-100%; and condensing and separating the mixture to obtain nitrogen trifluoride. And further mixing the prepared nitrogen trifluoride with fluorine gas to prepare nitrogen trifluoride mixed gas. According to the method, the F element content of the mixed gas can be greatly increased, the F / N atomic ratio of the mixed gas can be flexibly regulated and controlled to be 3.2-5.0, the reaction conversion efficiency is high, complete conversion of ammonia gas can be achieved, meanwhile, few by-products are generated, the generated by-product HF can be returned to the procedure of preparing fluorine through electrolysis, and ordered circulation of materials is achieved.

The invention relates to a modular exhibition wall system, and relates to the field of exhibition equipment. The modular exhibition wall system comprises a plurality of mutually connected wall units, wherein each wall unit comprises a square unit frame, each unit frame comprises two connecting pipes, and a first mounting pipe and a second mounting pipe which are connected between the two connecting pipes, each connecting pipe comprises a first connecting pipe body and a second connecting pipe body arranged in the first connecting pipe body in a penetrating mode, the second connecting pipe bodies and the first connecting pipe bodies are in sliding connection, connecting assemblies are arranged between the first connecting pipe bodies and the second connecting pipe bodies, and the first connecting pipe bodies and the second connecting pipe bodies are relatively fixed through the connecting assemblies. According to the wall system, the size of the unit frames can be adjusted according to the installation construction requirement, so that the built wall can meet the actual requirement, the practicability is better, the weight is light, the cost is low, repeated use is convenient, and the wall system is more suitable for the use requirement of temporary exhibition.

The invention discloses a hangover alleviating preparation as well as a preparation method and application thereof. The hangover alleviating preparation is prepared from the following raw materials inparts by weight of 10-30 parts of radix puerariae, 10-30 parts of hovenia dulcis thumbs, 10-30 parts of mung beans, 10-20 parts of dried orange peel, and 10-20 parts of dandelion. The raw materials of the hangover alleviating preparation disclosed by the invention are medicinal and edible materials, so that the hangover alleviating preparation is safe, free of toxic and side effects, relatively good in hangover alleviating effects and relatively low in cost. The preparation method of the hangover alleviating preparation is simple and convenient to operate and easy for industrial mass production, and an adopted microwave vacuum low-temperature drying technology has the advantages of higher drying speed and higher working efficiency.

The invention discloses an automatic water supply system for testing water purifiers, which mainly includes a pure water source, a steam generator, a liquid storage tank, a refrigeration unit, a water supply tank and a water supply pipeline; the pure water source is connected through a solenoid valve and a flow meter to the water supply tank; the steam generator is connected to the liquid storage tank and the water supply tank through a solenoid valve; the liquid storage tank is connected to the water supply tank through a liquid distribution pump, a solenoid valve, and a flow meter; one side of the water supply tank is connected to the water supply tank through a solenoid valve A refrigeration unit is connected; the water outlet at the bottom of the water supply tank is connected to the water supply pipeline through a water supply pump, a pressure sensor and a temperature sensor in sequence. The invention has the characteristics of regular flushing, steam disinfection, automatic liquid dispensing and closed-loop control, and is suitable for various test items of water purifiers, which can effectively ensure the scientificity of test data, reduce the test cost of water purifiers, and improve the detection of testing personnel efficiency.

The invention discloses a waveguide filter, comprising: a first shielding layer with a first through hole; an intermediate support layer with a frame structure arranged on the first shielding layer; a second shielding layer with a There is a second through hole, which is arranged on the intermediate support layer, and forms a waveguide cavity together with the first shielding layer and the intermediate support layer. The left end of the second shielding layer is provided with a signal input port, and the right end of the second shielding layer is provided with a signal input port. Output port; first signal transmission structure, the first end of the first signal transmission structure is set in the signal input port, the second end of the first signal transmission structure extends through the intermediate support layer to the first shielding layer, and is connected with the first The shielding layer is connected; the second signal transmission structure, the first end of the second signal transmission structure is set in the signal output port, the second end of the second signal transmission structure extends through the intermediate support layer to the first shielding layer, and is connected to the first shielding layer A shielding layer is connected. The present invention can be applicable to the use requirement of the terahertz frequency band.

The invention discloses a safety-enhanced automobile safety belt anchor, which is characterized in that it comprises a right-angled trapezoidal bag body (1), both bottom edges of the bag body (1) are open, and the bag body (1) ) is connected with a storage compartment (3) at the right angle, the bottom end of the storage compartment (3) is connected with a cushion (9), and the connecting edge of the storage compartment (3) and the cushion (9) is provided with a The through holes of the two legs, the two corners of the end of the cushion (9) are connected with elastic bands (10) for covering the back of the car seat, and the bag body (1) is provided with a temperature and humidity sensor and a music player . The safety-enhanced automobile safety belt anchor provided by the invention realizes five-point safety protection, has a high safety level, greatly enhances the protection level of the existing safety belt, and has music playing functions and temperature and humidity detection functions.

The invention provides an off-line reading method of a database function of a sql statement automatic generation tool, which includes obtaining the table structure information of the table to be queried and the function information of all supported built-in functions from the database, and saving the table structure information as the first text file, save the function information as a second text file; modify the format of the first text file and the second text file; read the first text file and the second text file, and save them according to the specified format; The data types of the text file and the second text file are matched, and a random algorithm is used to automatically generate a sql query statement, and output the sql query statement to generate an executable file. The advantages of the present invention: it can realize the generation of sql query statements using the sql query statement automatic generation tool under the situation of being separated from the database; at the same time, it unifies the input and output of the sql query statement automatic generation tool, is applicable to most databases, and has high compatibility powerful.