191results about How to "Combined realization" patented technology

The invention provides a compound double-chain quaternary ammonium salt disinfection solution. The compound double-chain quaternary ammonium salt disinfection solution comprises a double-chain quaternary ammonium salt and a single-chain quaternary ammonium salt, wherein the double-chain quaternary ammonium salt is bisoctyl dimethyl ammonium chloride or didecyl dimethyl ammonium chloride; and the single-chain quaternary ammonium salt is dodecyl dimethyl benzyl ammonium chloride. Preferably, the compound double-chain quaternary ammonium salt disinfection solution comprises 0.04wt%-0.06wt% of the double-chain quaternary ammonium salt and 0.20wt%-0.30wt% of the single-chain quaternary ammonium salt. The compound double-chain quaternary ammonium salt disinfection solution further comprises one or more of a non-ionic surfactant, an inorganic anti-interference agent and a synergist. The invention further provides a utilization method and application of the compound double-chain quaternary ammonium salt disinfection solution. The compound double-chain quaternary ammonium salt disinfection solution provided by the invention has a high sterilization speed and a good disinfection effect; the compound double-chain quaternary ammonium salt disinfection solution is sanitary and safe, has no toxic or side effect and has good stability; and the solution basically has no deformation effect on a dental impression die, guarantees the size stability of the dental impression die and is suitable for large-scale popularization and application.

The invention provides a multiple lung cancer-related gene methylation combined detection kit, which comprises: a detection reagent for specifically detecting the DNA methylation of human SHOX2 gene;a detection reagent for specifically detecting the DNA methylation of human RASSF1A gene; a detection reagent for specifically detecting the DNA methylation of human ANKRD18B gene; and a detection reagent for specifically detecting the DNA methylation of human MPDZ gene, wherein preferably the detection reagents are primers and probes. The invention further provides applications of the multiple lung cancer-related gene methylation combined detection kit in multiple lung cancer-related gene methylation combined detection, and a multiple lung cancer-related gene methylation combined detection method. According to the present invention, the multiple lung cancer-related gene methylation combined detection kit can perform the combined detection on the multiple lung cancer-related gene methylation, can significantly improve the tumor detection rate, has advantages of clever design and simple structure, and is suitable for large-scale promotion and applications.

The invention provides a core assembling production line of an engine cylinder block casting die core and a core assembling process of the engine cylinder block casting die core. The core assembling production line of the engine cylinder block casting die core comprises a first core assembling wire body and a second core assembling wire body which are arranged in parallel, wherein the first core assembling wire body is provided with a first core assembling station; and the second core assembling wire body is provided with a second core assembling station, a third core assembling station, a fourth core assembling station and a fifth core assembling station. The core assembling production line of the engine cylinder block casting die core provided by the invention is matched with a sub-step core assembling process so that the combination of a whole core set is realized, and the positioning precision and the connection reliability of a sand core are improved; a sand core drifting phenomenon caused by the fact that molten iron impacts in a pouring process is avoided, so that the wall thickness of a cylinder block is controlled in a range being not more than 3.5mm+ / -0.5mm; and the technical requirements of the casting of the engine cylinder block are met.

The invention provides a nucleic acid extraction lysate for cast-off cells in human feces. The nucleic acid extraction lysate comprises 1-8 mol / L guanidinium, a 1-20 mM metal ion chelating agent and a100 mM Tris-HCl buffer solution with the pH of 7.5-8.0, wherein guanidinium is selected from at least one of guanidine hydrochloride, guanidinium isothiocyanate and guanidine thiocyanate; the metal ion chelating agent is selected from at least one edetic acid and water soluble salt of edetic acid. Preferably, the nucleic acid extraction lysate further comprises a surfactant with the volume of 1-20%, the surfactant is a non-ionic detergent, and the non-ionic detergent is selected from at least one of Tween-20, Tween-80, Brij-35, NP40 and Triton-100. The invention further provides a related preparation method and application. The nucleic acid extraction lysate can quickly and efficiently realize cell lysis, fully releases nucleic acid, meets the consumption demand for follow-up nucleic aciddetection and is suitable for large-scale popularization.

The invention provides a small-particle-size open-graded asphalt mixture for an ultra-thin overlay. The mixture is prepared from 85%-92% by weight of aggregate, 2%-8% by weight of filler and 5.5%-7.5% by weight of polymer modified asphalt, the nominal maximum aggregate size is 4.75 mm and the thickness of a pavement layer is 1.0-1.5 cm; preferably, the aggregate is basalt or diabase, the filler is the mixture of limestone mineral powder and cement in the mass ratio being (1:1)-(3:1), and the polymer modified asphalt is POE composite modified asphalt and has the zero-shear viscosity being 30,000 Pa.s or higher at 60 DEG C and the softening point equal to or higher than 90 DEG C. The small-particle-size open-graded asphalt mixture for ultra-thin overlay can reduce the thickness of a thin overlay, reduce building cost of a project and reduce noise during driving, two levels of hard building stones with the particle size being 3-5 mm or 0-3 mm can be utilized, the environment and resource stress of superfluous corresponding building stones due to large-scale application of SMA (stone mastic asphalt) pavements is reduced, and the small-particle-size open-graded asphalt mixture is ingenious in design, simple and convenient to prepare, low in cost and suitable for large-scale popularization and application.

The invention provides a passive wireless sensor system based on third-order parity-time symmetry. The system comprises one non-resonant source coil, three same-resonant-frequency resonance coils (including a transmitting coil, a repeating coil and a receiving coil) and one non-resonant load coil. Each resonance coil regulates the resonant frequency of a single coil by winding multiple turns of wires on the side of an insulated non-magnetic material frame and loading capacitors; by utilizing physical properties of a non-hermitian system based on third-order parity-time symmetry and adjusting coupling distance between the coils, the system is allowed to be located in a third-order exceptional point; and when external small disturbance acts on any one resonant coil, the frequency response ofthe third-order system varies with the cubic root of the external disturbance, so that effect of the small disturbance is greatly magnified, and the induction sensitivity of the system is significantly enhanced.

The invention provides a wear-resisting non-slip sole structure. By adopting thermoplastic polyurethane (TPU) as the material of a shoe body outsole, by means of the characteristics of the TPU materials, the TPU diaphragm outsole and an insole material are subjected to primary in-mold heating to directly bond together and be shaped, an outsole and insole integrated sole complex is formed, and thewear-resisting non-slip sole structure which utilizes the characteristics of the TPU material and has the more excellent properties of wear resistance, slip resistance, softness and comfortability ofthe sole compared with a traditional rubber sole; meanwhile, the wear-resisting non-slip sole structure has the advantages of being simple in processing technology, capable of completely recycling burrs and waste, high in production speed and the like, and the advantages of shortening the sole production manufacturing process, reducing energy consumption, lowering the labor cost, meeting the intelligent production and the like are achieved.

The invention provides a magnetic field generation device based on a magnetic metamaterial and a wireless electric energy transmission system. The magnetic field generation device mainly consists of an energy emitting end and a magnetic metamaterial assembly, wherein the magnetic metamaterial assembly is loaded onto the energy emitting end and has the sub-wavelength characteristic; the magnetic metamaterial assembly comprises a plurality of magnetic metamaterial units. The magnetic field generation device has the advantages that the magnetic metamaterial unit of which the frequency tuning range is controlled within the kilohertz frequency band is excited by an emitting coil, so that each magnetic metamaterial unit can be coupled by a magnetic field to form a special channel band; the different magnetic field distribution can be correspondingly excited at different frequency points within the channel band, so that a magnetic field which is relatively uniformly distributed in a large area can be obtained through regulating and controlling the frequency, thereby realizing the magnetic field generation device capable of performing wireless electric energy transmission with multiple targets, and the wireless electric energy transmission containing the magnetic field generation device.

The invention provides a composite double-chain quaternary ammonium salt antiseptic solution, which comprises double-chain quaternary ammonium salt, single-chain quaternary ammonium salt and o-phthalaldehyde, the double-chain quaternary ammonium salt is dimethyldioctylammonium chloride or bis-decyl-dimethyl ammonium chloride, and the single-chain quaternary ammonium salt is dodecyl dimethyl benzyl ammonium chloride; preferably, the weight of double-chain quaternary ammonium salt is 0.04-0.06%, the weight of single-chain quaternary ammonium salt is 0.20-0.30%, and the weight of o-phthalaldehyde is 0.4-0.7%. The composite double-chain quaternary ammonium salt antiseptic solution also comprises one or more of a nonionic surfactant, an inorganic anti-interference agent and a synergist. The invention also provides an application method of the composite double-chain quaternary ammonium salt antiseptic solution and its application. The composite double-chain quaternary ammonium salt antiseptic solution has the advantages of fast sterilization and good disinfection effect , health, safety, no toxic and side effect, and good stability, has no deformation effect on a dental impression, guarantees size stability of dental impression, and is adapted to large scale popularization and application.

The invention provides a pipe machining platform for building construction and a pipe bending equipment of the platform. The machining platform comprises a workbench and the pipe bending equipment fixedly connected onto the workbench; the pipe bending equipment comprises a casing as well as a pipe fixing mechanism, a pipe bending mechanism and an angle adjusting mechanism which are arranged on thecasing; the pipe fixing mechanism is used for clamping and fixing pipes to the equipment for subsequent pipe bending operation; and the pipe bending mechanism is used for performing pipe bending machining on the fixed pipes. According to the machining platform, the pipe bending angle can be controlled by the aid of the pipe bending equipment without intentional observation, so that the working efficiency can be improved, and the mis-operation rate can be reduced.

The invention provides a cultivation method for organic rice. Green manure, rape seed cakes and a biological bacterial fertilizer are used as production fertilizer sources. Preferably, weeds and insects are killed manually. Rational close planting is adopted. The method further comprises a step of improving soil fertility, wherein green manure is applied to soil. The method further comprises a step of cultivating rice seedlings, specially comprises the steps of: selecting and treating rice seeds; and then sowing the rice seeds in a proper period. The method further comprises a step of applying a fertilizer, wherein rape seed cakes and the biological bacterial fertilizer are applied. The method further comprises a step of field management. The invention further provides related organic rice. The cultivation method for organic rice provided by the invention can better use the biological bacterial fertilizer and green manure. Soil is planted while being cultivated, so that the activity of soil is improved, the fertility of soil is improved, and the residual amount of heavy metal ions and pesticides is reduced. The cultivation method is skillful in design, simple to use, safe and environmental-friendly and low in production cost. The obtained organic rice is low in pesticide residual amount, does not harm human health, and is high in yield and good in quality, the economical benefit is increased, and the organic rice is suitable for being popularized and applied on a large scale.

The invention provides a repairing method for bulging and falling of a finish material. The method comprises the steps that (1) the finish material at the bulging portion is taken out, and the surface of an adhesion layer and the adhesion surface of the finish material are cleaned; (2) bulging and falling repairing adhesives are painted to the surface of the adhesion layer and the adhesion surface of the finish material, and the thickness of the adhesives is controlled to range from 0.1 mm to 0.2 mm; (3) the finish material is placed back to the bulging portion, a joint is arranged between the finish material and finish materials around, the finish material is leveled and compacted, and the bulging and falling repairing adhesives squeezed out of the joint are completely removed, specifically, the amount of the bulging and falling repairing adhesives per square meter is 0.3-0.4 kg; and (4) 2-3 days after natural maintenance, the joint is cleaned, the joint is filled with a flexible joint mixture so that the joint can be leveled up, the joint filling depth is not smaller than 3 mm, and natural maintenance is carried out to cure the flexible joint mixture. The repairing method is simple, rapid and safe, the repairing effect is good, design is ingenious, the original decoration effect of stone and vitreous tiles can be maintained, the maintenance cost can be greatly reduced, and the repairing method is suitable for being widely applied and popularized.

The invention discloses a pulse load genset, comprising a prime motor, a generator, a flywheel body, a common base and multiple flywheel pieces with different inertias, wherein the prime motor, the generator and the flywheel body are integrated with bearings into a whole in an aligned positioning manner through an elastic coupling, a connecting flange and a transmission shaft to form the pulse load genset which is arranged on the common base; and the flywheel pieces of each inertia can be arranged on and integrated with the flywheel body into a whole to form flywheels with different inertias. The invention can realize combined variations of multiple schemes for flywheel inertias on the premise of ensuring that each equipment and structure of the genset do not change basically, and has low cost, convenient alternation and good reliability.

The invention discloses a method for cutting, intensive trenching and returning-to-field of crop straw or green manure crop. The method includes the steps of (1), digging a back-filling trench in thefield and placing trenched soil at the edge of the back-filling trench; (2), cutting crop straw or green manure crop in the field; (3), conveying the cut crop straw or green manure crop into the back-filling trench; and (4), filling the trenched soil back to the back-filling trench while compacting the soil. The invention further provides associated equipment for implementing the method. The method is unique and novel, can realize improvement of soil fertility through returning-to-field of crop straw or green manure crop, can also overcome troubles in tillage, fertilizer applying, seeding, germinating and the like due to returning-to-field of crop straw or green manure crop by turning or covering; the associated equipment is of skillful design, easy and convenient to operate, low in cost and suitable for promotion and application in large scale.

The invention provides a fair-faced concrete mix proportion design method.The method includes: naturally stacking stones to obtain a stone mass m1, and closely filling the stones with sand to obtain a sand mass m2; determining a water-binder ratio according to a strength design theory, preparing slurry according to the proportion of each binder material, and measuring density of the slurry; calculating superficial areas of the sand and the stones and a coating thickness of the pure slurry to obtain a volume (including sand volume below 0.315mm) of the pure slurry, comparing the sum of the volume of the pure slurry, the sand volume above 0.315mm and the stone volume with a unit volume to regulate quantity of the sand and the pure slurry to make the total volume equal to the unit volume; subtracting the sand volume below 0.315 from the volume of the pure slurry to obtain the volume of the slurry; calculating the mass of the slurry and each binder material and water consumption; finally working out a fair-faced concrete mix proportion.The designed fair-faced concrete can meet design requirements of the fair-faced concrete, and ingenious design, simplicity and convenience in operation and suitableness for large-scale popularization and application are realized.

The invention provides a concrete structure protective layer thickness control device and a control method thereof. A supporting assembly with simultaneous expansion and contraction at both ends is formed by separately screwing a screw at both ends of a connecting nut; the length of the supporting assembly is adjusted by rotating the connecting nut so as to clamp the supporting assembly between templates; and then a plurality of adjusting holes are formed in the tail end of a screw rod to install a stirrup limiter; the stirrup limiter is installed at the appropriate adjusting hole part according to the thickness of a protective layer; a limit structure that limits the position of a steel cage is formed; the thickness of the protective layer of the concrete structure does not change due tosubsequent construction. Therefore, the device provided by the invention solves the problem that the traditional construction method has difficulty in guaranteeing the thickness of the protective layer and the spacing of the stirrup. The concrete structure protective layer thickness control device with a simplified structure and convenient operation is produced. The thickness of the protective layer of the concrete structure is effectively ensured, and the stirrup is effectively fixed. The stirrups do not move laterally due to subsequent construction. The quality of the project is greatly improved.

The invention discloses an automotive LED headlamp which comprises a lamp shell, a first lens and a second lens. A focusing ring is arranged on the lamp shell and fixedly provided with the first lens. The second lens is fixed to a support, and the support is arranged at the bottom of the lamp shell through supporting columns. A circuit board is fixed to the bottom of the lamp shell, a light shielding board and two sets of LED unit bodies are welded to the front face of the circuit board, and a heat conduction red copper block is welded to the back face of the circuit board. A sealing cavity is formed between the red copper block and the tail of the lamp shell and connected with a cooling device, and the light shielding board is located between the two LED unit bodies. A double lens assembly is formed by the first lens and the second lens for direct irradiation and light beam convergence, the horizontally-arranged light shielding board is matched for imaging, so that light convergence is good, good light refraction lines are obtained, and light efficiency is further improved; and meanwhile distance light and passing light are combined. Due to the red copper block heat conduction structure, heat resistance of LED chips is lowered, and the light efficiency is improved.

The invention provides a novel high-performance solar shading paint and related adhesives, solar shading film and base material, wherein the novel high-performance solar shading paint includes an adhesive, a near-infrared ray shielding agent and an ultraviolet absorber, and its characteristics In that, the binder includes a compound represented by formula (I), and X of the compound of formula (I) is an alkoxy group. The coating can not only be cured to form a film at normal temperature, but also the obtained hardened film has high sunlight shielding ability and high surface hardness. The coating is ingenious in design, easy to prepare and low in cost, and is suitable for large-scale popularization and application.

The invention discloses a combined stirrer used for mechanical stirring desulfurization of molten iron and a manufacturing method of the combined stirrer. The combined stirrer comprises a stirring shaft and a connecting flange arranged over the stirring shaft. The stirring shaft is composed of a shaft section and a blade section from top to bottom. A plurality of composite stirring blades are symmetrically arranged on the outer wall of the blade section. Each composite stirring blade comprises a metal framework. The stirring shaft comprises an air cooling pipe and a stirring shaft metal core. A metal end cap is arranged at the bottom of the inner wall of the stirring shaft metal core. A plurality of connecting metal cores are evenly distributed on the outer wall of the stirring shaft metal core of the blade section in the circumferential direction in a welded mode. Each connecting metal core is welded to the corresponding metal framework along the radial outer side of the stirring shaft. According to the structure and manufacturing method of the combined stirrer, and the comprehensive purposes of simple structure, easy, convenient and efficient manufacturing, high cyclic utilization rate of the stirrer, low cost, excellent desulfurization stirring and mixing property and the like can be achieved.

The invention provides a special indoor construction plateand an installation methodthereof. The construction plate comprises a hollow outer frame plate, a hollow inner frame plate, a damping mechanism and a sound adsorption sponge layer, wherein the hollow outer frame plate and the hollow inner frame plate are connected in a sleeving mode; the damping mechanism is arranged in the outer frame plate and the inner frame plate, and the sound adsorption sponge layer is arranged outside the construction plate; the problem of insufficient performance of an existing construction plate protection wallspace is solved, and a construction plate with the function of sound absorption and damping simultaneously is achieved. In addition, concave and convex matched mechanisms are arranged on the oppositelateral sides of the circumferential side of the construction plate, so that an initial positioning structure is formed; fixing plates are arranged on two sides of the diagonal positions, screw holesare formed in the other two sides of the diagonal positions, and therefore a fixed installation structure is formed; the problem that an existing construction plate is not easy to install repeatedlyis solved; and the construction plate and the installation method with high installation convenience are realized.

The invention provides a method for manufacturing a shoe outsole with a TPU high-low-temperature film. A TPU high-low-temperature film sheet is manufactured by adopting tape-casting moulding technology; after the TPU high-low-temperature film sheet is subjected to three-dimensional moulding machining, a three-dimensional film shell structure is formed in the TPU high-low-temperature film sheet; then a TPU film sheet outsole is formed through mould cutting; the TPU film sheet outsole and a insole material can enter a mould jointly for processing, so that an integrated shoe sole composite can beformed through one-step in-mould heating, direct adhesion and joint moulding; a manufacturing process technical problem of traditional manufacturing of rubber outsoles is effectively solved; the shoesole manufacturing method which has the advantages of being simple in manufacturing technique, capable of fully recycling burr waste materials, high in production speed and the like is provided; beneficial effects of shortening a shoe sole production manufacturing process, reducing energy consumption, lowering labor cost, meeting intelligent production and the like are realized; and meanwhile, byutilizing features of a TPU material, a shoe sole manufactured with the TPU high-low-temperature film shoe outsole manufacturing method has more excellent sole wear-resistance, skidding-resistance and soft comfort compared with a traditional rubber shoe sole.

The invention discloses a gymnadenia conopsea extraction method, which comprises the following steps of:(1) soaking roots of the gymnadenia conopsea in water, fully soaking the roots, until the rootsof the gymnadenia conopsea are sampled and observed without white cores;(2) carrying out wet superfine grinding on the roots of the gymnadenia conopsea to obtain dispersion slurry;(3) adding additional water into the dispersion slurry to obtain diluted dispersion liquid, heating to make the temperature rise, then adding neutral protease, and carrying out circulation homogenization extraction through a homogenizing pump to obtain extract liquid;(4) carrying out heat preservation and enzyme inactivation;(5) carrying out crude filtration to obtain crude filtrate; and (6) carrying out fine filtration to obtain refined filtrate. By means of the method, the related extract of gymnadenia conopsea is also provided. The method for extracting the gymnadenia conopsea is unique and novel, the extracted gymnadenia conopsea extract has safety and unique application value in the aspects of skin care, wound repair, wrinkle resistance, sun protection, oxidation resistance, allergy resistance, skin moisture retention and the like, has good application prospect in the field of cosmetics, and is ingenious in process design, simple and convenient to operate and low in cost.

The invention discloses a method for measuring a rice amylose content through singles grain of rice. The method comprises the following steps that: a plurality of rice varieties with different amylose contents are selected as reference samples; the amylose contents are measured separately; the rice of the reference samples and the rice of to-be-tested samples are dried until the weight of the rice of the reference samples and the rice of the to-be-tested samples is constant, a single grain of rice is selected from the reference samples and the to-be-tested samples respectively, and husked and weighed, and then, each husked grain of rice is added into a NaOH solution, and the NaOH solution with the husked grain of rice is vibrated; water is added into the NaOH solution until the total volume of the NaOH solution and the water reaches first volume; centrifugation is performed, and a supernate is obtained; and a glacial acetic acid solution and an iodine-potassium iodide solution are added into a centrifuge tube where the supernate is arranged, the volume of the glacial acetic acid solution and the volume of the iodine-potassium iodide solution are equal to the volume of the supernate; water is added into the centrifuge tube until the total volume of the supernate, the glacial acetic acid solution, the iodine-potassium iodide solution and the water reaches second volume, an obtained mixture stands still, a color developing solution is obtained; absorbance values is measured, with the amylose contents of the reference samples adopted as vertical coordinates, and the absorbance values of a grain of rice of 0.025g converted from the above absorbance values adopted as abscissas, a standard curve is drawn, or a regression equation is obtained; and the amylose contents of the to-be-tested samples are calculated according to the absorbance values of the grain of rice of 0.025g converted from the absorbance values of the to-be-detected samples. The method is unique and novel. With the method adopted, the rice amylase contents can be measured by single grains of rice, and measurement is accurate and reliable.

The invention provides a wireless power transfer system and transfer method. The wireless power transfer system mainly consists of a signal source, an exciting coil, a pair of resonant coils with thesame resonant frequency, a receiving coil and a load; the pair of resonant coils, formed by multiple winding litz wires and loading capacitors on the side surface of an organic glass plate, are used to adjust and control the coil resonant frequency; and by virtue of single-mode point physical properties of a non-Hermitian system, the work frequency can be at the resonance frequency of the resonantcoils, for controlling the distance between the receiving coil and the adjacent resonant coil to adjust the energy transmission rate coupled out of the system, so that by changing the coupling distance of the pair of resonant coils, it is ensured that the system is in the single mode point, and the disadvantages in the prior art are overcome; and therefore, efficient wireless power transfer and single-frequency efficient wireless power transfer at the kilohertz frequency band are realized in a condition of changed coupled distances by virtue of the single single-mode point fixed frequency andthe physical properties with the minimum loss.

The invention provides a support system with an underground horizontal support and a construction method thereof. A horizontal propelling device and end pipes with disc cutters at the front ends are previously arranged on pillars, the pillars are lowered to the same height positions at the bottoms of corresponding foundation pits via preset pile holes, and the end pipes are driven to move towardspillars at the other side by the horizontal propelling device, forming a space capable of being used for installing the pipe joints of steel pipes section by section, so that horizontal support is formed in soil after the installation of the steel pipes without digging the foundation pits, and the technical problem that effective control is difficult to carry out on the deformation of the foundation pits if a horizontal support construction mode is set after the foundation pits are dug is solved. The purposes of greatly improving the rigidity of the foundation pit support system, effectively reducing the bottom deformation of the foundation pits and the shift of the foundation pit support system during the digging of the foundation pits and effectively improving the safety performance of the foundation pit support system and the like are achieved.

The invention provides an assembling type steel structure residence system and a node installation method thereof. Steel column components with wide-flat shape rectangular steel pipes as main body constitution is arranged in corner positions and the middle of the residence, wherein cross section width of the steel pipes is larger than or equal to wall thickness, and cross section length of the steel pipes is longer, and a narrow column structure is formed; and the purpose of hiding steel columns in walls is achieved so that lateral support is not needed to be arranged additionally in the longitudinal direction in the residence. In addition, corbels arranged along the plane long edge extension direction of the residence are arranged on the steel column components in a matched manner, and nodes are moved outside from the steel column components by the corbels. Moreover, connection installation of steel beam components and the steel column components or connection installation of the steel beam components and the corbels is conducted through a bolt assembly, and the purpose of minimization of onsite welding work is achieved.

The invention provides a wireless electric energy transmission system based on three resonance coils and a transmission method of the wireless electric energy transmission system. The wireless electric energy transmission system comprises a non-resonance source coil, a transmitting coil, a relay coil, a receiving coil and a non-resonance load coil, wherein the transmitting coil, the relay coil and the receiving coil have the same resonance frequency. Regulation and control of coil resonant frequency is realized by a pair of resonant coils formed by winding wires on the side surface of an insulating non-magnetic material frame in multiple turns and loading capacitors, and the coil resonant frequency is regulated and controlled by utilizing space symmetry-based resonance coils. Due to the physical properties of the three resonance coils based on parity-time symmetry, the working frequency of the system is located at the resonance frequency of the resonance coils. Compared with a traditional WPT system, the system has the advantages of slow transmission efficiency reduction, higher robustness and small standby power loss, and is capable of reducing energy radiation of the system to the surroundings at the resonant frequency under the same condition. In addition, the system has high robustness even if a receiving part is miniaturized under a certain transmission distance; and a plurality of miniaturized receiving parts which do not influence each other can be charged with different efficiencies at the same time.

The invention provides a non-perforated closed water permeable manhole cover prepared from 65-75 parts by weight of crushed stone, 15-23 parts by weight of cement and 4-6 parts by weight of water. Preferably, the particle size of the crushed stone ranges from 0mm to 20mm, wherein measured by 100wt% of crushed stone, the particle size of 0wt% to 3wt% of crushed stone is less than 2.5mm; the particle size of 3wt% to 8wt% of crushed stone is greater than or equal to 2.5mm and less than 5mm; the particle size of 65wt% to 80wt% of crushed stone is greater than or equal to 5mm and less than 10mm; and the particle size of 15wt% to 25wt% of crushed stone is greater than or equal to 10mm and less than 20mm. Also, 0.5-2 parts by weight of water reducer and 3-8 parts by weight of enhancer are included. The non-perforated closed water permeable manhole cover in the invention is high in capability of anti-pressure and anti-crack, high in porosity, and good in permeability, so that the drainage efficacy of a drainage ditch can be developed better and safety of people can be ensured. Moreover, urban surface pollutants entering an urban drainage pipe network can be reduced. In addition, the manhole cover is ingenious in design, easily available in raw materials, simple and convenient to fabricate, low in cost, and suitable for large-scale popularization and use.