31results about How to "Avoid the disadvantages" patented technology

The invention provides an application of a three-dimensional ordered macro-porous perovskite type oxide which is used as an oxygen carrier for preparing hydrogen through a carbonic fuel chemical chain. The three-dimensional ordered macro-porous perovskite type oxide has the characteristics of the perovskite type oxide and has a three-dimensional ordered macro-porous structure of an inverse opal structure. The three-dimensional ordered macro-porous perovskite type oxide is used as an oxygen carrier for preparing the hydrogen through the carbonic fuel chemical chain and has a general formula of ABO3, wherein A is rare-earth metal and B is transition metal. The three-dimensional ordered macro-porous structured perovskite structure has stable properties and longer service life; pore channels and specific surface area are bigger; during a contact process of the oxygen carrier and a carbonic fuel, much more lattice oxygen for participating in reaction can be supplied; the contact of the oxygen carrier and the carbonic fuel can be boosted; the specific surface area of the oxygen carrier can be increased by abundant pore channels; catalytic conversion between small particles and gas molecules is boosted; the three-dimensional ordered macro-porous perovskite type oxide has higher reaction activity in chemical chain combustion and steam pyrolytic decomposition; and compared with the conventional metal oxygen carrier, the three-dimensional ordered macro-porous perovskite type oxide has higher reaction activity and hydrogen yield.

The invention discloses laundry liquid and a preparation method thereof. Mild surfactants with mild washing property, high decontamination capacity, no pollution on the environment, such as fatty alcohol-polyoxyethylene ether (AEO9), dodecyl dimethylaminoacetate (BS-12), dodecyl dimethyl benzyl ammonium chloride (1227), distearyl dimethyl ammonium chloride (D1821), polyethylene glycol 6000DS diester, coconut oil diethanolamine (6501) and the like are prepared into the laundry liquid according to a certain proportion and a process; clothes washed by the laundry liquid have soft textile fibers and comfortable wear; and the laundry liquid is mainly used for washing personal clothes, sheets and bedding bags of households, sheets and bedding bags of hotels and the like.

The invention discloses a wireless video monitoring system based on a wide water domain. A ship, vehicle and boat hybrid monitoring manner is adopted to establish a monitoring system, a wireless-based network-carrying system is constructed for a ship-vehicle-boat monitoring system, wireless network coverage is carried out by a 3G (The 3rd Generation Telecommunication)+WiMAX (Worldwide Interoperability for Microwave Access)+WiFi (Wireless Fidelity) hybrid architecture mode, servers are erected on a boat, a vehicle and a boat for transmitting and processing videos, and video data acquired by the ship, the vehicle and the boat are transmitted to a monitoring center through the network-carrying system. The monitoring system based on the wide water domain, provided by the invention, has the advantages of good coverage type, flexibility in detection, no influence from weather environment, and the like, can better avoid the defect brought by traditional satellites, can be used for monitoring the wide water domain in real time, has a aerial panorama with the formation time reduced from traditional 3-7 days to about 1-2 days, and can work under weather conditions such as rain, snow, fog and the like that the traditional satellites can not form an image and give a corresponding result image.

The invention relates to the technical field of new building ceramic materials, and particularly discloses a composite process antibacterial ceramic tile and a preparation method thereof. The composite process antibacterial ceramic tile comprises a green body layer and an antibacterial glaze layer, glaze of the antibacterial glaze layer contains a first antibacterial agent, and surface micropores of the antibacterial glaze layer are filled with an antibacterial antifouling agent; and the first antibacterial agent comprises zinc silicate and / or zinc aluminate, the antibacterial antifouling agent contains a second antibacterial agent, and the second antibacterial agent comprises nano zinc phosphate and / or nano zinc zirconate. The preparation method comprises the following steps: preparing the green body layer, preparing the antibacterial glaze slip, spraying the antibacterial glaze slip on the surface of the green body layer, sintering to obtain a semi-finished product, polishing the semi-finished product, and polishing the surface of the semi-finished product by using an antibacterial antifouling agent to obtain the antibacterial ceramic tile. According to the antibacterial ceramic tile, a composite antibacterial technology combining in-glaze antibacterial and glaze layer surface micropore antibacterial is adopted, efficient and lasting antibacterial of a ceramic tile product is achieved, antibacterial components do not affect permeability of a glaze surface, and the antifouling performance of the glaze surface can be achieved.

The invention relates to a chlorination method for sucrose-6-ethyl ester. The chlorination method comprises the following steps: (1) respectively preparing a chlorination reagent and a solution of sucrose-6-ethyl ester from a polar non-proton solvent; (2) chlorinating the sucrose-6-ethyl ester solution by a chlorination reagent solution; (3) refluxing under reduced pressure; and (4) evaporating the polar non-proton solvent by distilling, recycling, neutralizing the sucrose-6-ethyl ester solution in a distillation kettle, removing the solvent, adding water to dissolve, discoloring and crystallizing to obtain a sucrose-6-ethyl ester crude product, wherein the recycled a polar non-proton solvent is used for the chlorination reagent solution prepared in the step (1). According to the chlorination method, generated hydrogen chloride and sulfur dioxide are discharged by refluxing under reduced pressure to promote reaction to positively perform, and the final reaction temperature is reduced to 105 DEG C which is lower than the highest holding temperature in the existing chlorination technology by 10 DEG C, so that the defects generated by carbonization in the chlorination process are completely avoided; and the used polar non-proton solvent can be recycled for a next-batch chlorination reaction process, and therefore, the chlorination method is especially suitable for industrial production.

The invention provides a natural plant compound fowl feed additive, which is prepared from natural plants such as Acanthopanax senticosus, scouring rush, and Cyrtomium fortunei, and can be mixed with common feed for laying hens, laying ducks and laying gooses into complete feed, avoids the defects generated by medical additives in the feed, and obviously improves the quality of poultry meat and eggs. The eating of eggs produced can strengthen the body, promote development of bones of children, and prevent nyctalopia and hypopsia; and the eggs have oxidation resistant function, can resist cancer and ageing, improve functions of the immunologic system of human body, make patients recover early, contribute to removing age pigment and treating emphysema and hyperthyroidism, and have the function of preventing and treating cerebral arteriosclerosis, cerebral thrombosis, coronary heart disease, and stenocardia, reducing blood pressure, blood-fat, and cholesterin, treating insomnia, dizziness and tinnitus, and preventing and overcoming fatigue.

The invention provides a formwork suitable for a fabricated beam column post-cast section and an installing method thereof. The formwork suitable for the fabricated beam column post-cast section is used in a fabricated beam column system, screw and nut based formwork fixing is achieved through bolt holes and sleeve screws penetrating through a U-shaped steel formwork and nuts fixing the screws, the usage number of reinforcing wooden strips and steel pipes is decreased, lower-portion supports are decreased, and material consumption is reduced. Accordingly, two ends of the formwork of a fabricated beam or column are respectively and fixedly connected with two fabricated beam or columns to be connected without supporting and reinforcement of wooden strip steel hoops and other materials to the formwork, lower-portion supports of the post-cast section are omitted, splicing is flexible and convenient, dismounting is easy, and the cost is reduced.

The invention discloses a fence type shock insulation structure and a design method thereof, and belongs to the technical field of shock insulation structures. The fence type shock insulation structure comprises a plurality of anti-seismic units, and the multiple anti-seismic units are arranged and distributed on the outer side of a protected building with the protected building as the circle center to form a circular shock insulation structure. The bottom surface of an anti-seismic unit is fixed with a foundation; the anti-seismic unit is of a block-shaped structure with a rectangular section. According to the design method of the fence type shock insulation structure, the shock insulation structure and the foundation are modeled and simulated through a finite element method. A parametric modeling method is adopted when the anti-seismic units and the circular arrangement of the anti-seismic units are designed and calculated, and simulation results of different geometric dimensions and different materials can be obtained only by scanning designed parameters. According to the fence type shock insulation structure and the design method thereof, the arrangement mode is simple and easy to implement, and the problems that a traditional anti-seismic structure is complex in design and large in installation difficulty are solved; the problem that according to a traditional anti-seismic scheme, the anti-seismic performance of an existing building cannot be upgraded under the condition that the structure of the existing building is not changed at all is solved.

The invention provides an electric conducting roller capable of reducing the arcing phenomenon in an electrode foil powerup process. The electric conducting roller comprises a cylinder, and a roller shaft penetrating in the cylinder; bearings are mounted at two ends of the roller shaft; circular end covers are additionally mounted at the left and right ends of the cylinder; the roller shaft penetrates through the centers of the end covers; and an electric conducting bar is fixedly arranged in the axial direction of the outer surface of the cylinder. In the electric conducting roller capable ofreducing the arcing phenomenon in the electrode foil powerup process, through adding of the electric conducting bar on the surface of the cylinder, the current carrying capacity is improved, the heating quantity is reduced, the defect caused by adding of a cooling device is prevented, and the arcing problem in the electrode foil powerup process is reduced.

The invention discloses a jacket platform. The jacket platform is mainly suitable for shallow water leg inner piles and comprises a jacket and steel piles, wherein the steel piles are downwards inserted into jacket legs of the jacket and fixed to a seabed; the jacket platform further comprises crown plates and gap plates, the crown plates are connected to the outer walls of the steel piles in a sleeving mode, the bottoms of the crown plates are fixed to the top ends of the jacket legs to connect the jacket legs and the steel piles into a whole, and then environmental loads borne by the jacketand dead weight are transmitted to the steel piles; the gap plates are arranged between the inner walls of the jacket legs and the outer walls of the steel piles, the plurality of gap plates are arranged surrounding the steel piles at intervals and are fixed to the inner walls of the jacket legs. Furthermore, when the jacket platform is in a working state, the loads between the jacket and the steel piles are transmitted, the design that the loads of the jacket are transmitted to the steel piles through the crown plates and the gap plates and finally transmitted to pile foundations fully utilizes the strength of the jacket legs, the steel piles and the crown plates, due to the fact that grouting is not needed, the defects of a traditional grouting scheme are avoided, and meanwhile, the construction period and the construction cost can be greatly saved.

The invention provides a herba epimedii-mugwort compound poultry feed additive mainly composed of herba epimedii, mugwort, pumpkin seeds, large-fruited Chinese hawthorn, equisetum hiemale, wild rose hip, malus pallasiana and radix isatidis; all the drugs are in combined use and collaborative compatibility and are used in the poultry feed additive; the poultry feed additive is added and mixed with conventional feeds for laying hens, laying ducks, laying gooses and the like to form complete feeds according to the proportion of 30-50%, the disadvantages produced due to drug additives in feeds are avoided, and the egg production rate of egg poultry is significantly improved; the mugwort, pumpkin seed, large-fruited Chinese hawthorn and other raw materials are low in production cost and are used for feeding the laying hens, so the cost of breeding can be significantly reduced; the pharmacological effects of equisetum hiemale, malus pallasiana and radix isatidis can effectively reduce generation of laying hen diseases.

Belonging to preparation of new genes and construction of engineering bacteria, the invention in particular relates to a pyranose oxidase gene, pichia pastoris constructed from the same and application. According to the invention, codon optimization software is mainly utilized to optimize the codons of pyranose oxidase to make them all become pichia pastoris preferred codons, and then the means ofgene synthesis is utilized to synthesize the target gene; and the gene is transformed into pichia pastoris to achieve high efficiency expression of the target protein. The recombinant pichia pastorisprepared according to the invention has high fermentation enzyme activity, lays a good foundation for application of pyranose oxidase, effectively avoids the disadvantages generated during expressionin escherichia coli, and opens up a brand new industrial efficient production way for pyranose oxidase, etc.

The invention provides an application of rose oil residue as a natural plant feed additive in resisting coccidiosis, and discloses a novel medical application of the rose oil residue as the natural feed additive for preventing and treating coccidiosis of animals such as chicken; compared with the conventional chicken feed, the feed avoids the defects generated by medicine additives in the feed, obviously improves the quality of poultry meat and eggs, and has the advantages of weight increment and good infection resistance.

The invention relates to the technical field of new building ceramic materials, and specifically discloses a compound process antibacterial ceramic brick and a preparation method thereof. The composite process antibacterial ceramic tile includes a green body layer and an antibacterial glaze layer, the glaze of the antibacterial glaze layer contains a first antibacterial agent, and the micropores on the surface of the antibacterial glaze layer are filled with an antibacterial and antifouling agent; the first antibacterial agent includes silicic acid Zinc and / or zinc aluminate, the antibacterial antifouling agent contains a second antibacterial agent, and the second antibacterial agent includes nanometer zinc phosphate and / or nanometer zinc zirconate. The preparation method is as follows: first prepare the green body layer, then prepare the antibacterial glaze slurry and pour it on the surface of the green body layer, and make a semi-finished product after firing, polish the semi-finished product, and polish it with an antibacterial antifouling agent. Grinding to produce antibacterial ceramic tiles. The invention adopts the composite antibacterial process of antibacterial in glaze combined with microporous antibacterial on the surface of glaze layer to realize efficient and durable antibacterial of ceramic tile products, and the antibacterial components do not affect the permeability of the glaze surface, and can realize the antifouling performance of the glaze surface.

The invention discloses a wireless video monitoring system based on a wide water domain. A ship, vehicle and boat hybrid monitoring manner is adopted to establish a monitoring system, a wireless-based network-carrying system is constructed for a ship-vehicle-boat monitoring system, wireless network coverage is carried out by a 3G (The 3rd Generation Telecommunication)+WiMAX (Worldwide Interoperability for Microwave Access)+WiFi (Wireless Fidelity) hybrid architecture mode, servers are erected on a boat, a vehicle and a boat for transmitting and processing videos, and video data acquired by the ship, the vehicle and the boat are transmitted to a monitoring center through the network-carrying system. The monitoring system based on the wide water domain, provided by the invention, has the advantages of good coverage type, flexibility in detection, no influence from weather environment, and the like, can better avoid the defect brought by traditional satellites, can be used for monitoring the wide water domain in real time, has a aerial panorama with the formation time reduced from traditional 3-7 days to about 1-2 days, and can work under weather conditions such as rain, snow, fog and the like that the traditional satellites can not form an image and give a corresponding result image.

The invention discloses a computer system development worktable with a function of spatial extension. The worktable comprises a worktable body, the upper end of the worktable body is provided with anupper cover plate, the outer surface of one side of the lower end of the worktable body is provided with a supporting column, the outer surface of one side of the middle of the supporting column is provided with a first supporting plate, the lower end of the first supporting plate is provided with a second supporting plate, the lower end of the upper cover plate is provided with a keyboard support, two sides of the keyboard support are both provided with sliding grooves, the lower end of the keyboard support is provided with an article support, and the outer surface of the other side of the lower end of the upper cover plate is provided with a host baffle. The computer system development worktable with the function of spatial extension is provided with a double-layer foldable table top, aone-way gear and a sliding type cable hole, the table top of the worktable can be effectively expanded, the height of a supporting frame can be quickly adjusted, the location of the cable hole can bechanged at will, and a better use prospect is brought.

The invention discloses a transmission, and relates to the technical field of transmission equipment. The transmission comprises a half gear ring which is not fixed in position, a transmission disc which is driven by a driver to rotate, first speed changing rails which are fixedly connected to the transmission disc, first power gears which can move along the first speed changing rails and axially rotate, first transmission shafts which are driven by the first power gears to rotate, and a first output gear which is driven by the first transmission shafts to rotate, and the transmission disc, the first speed changing rails, the first power gears and the first transmission shafts are all located on the front face of the half gear ring. The transmission further comprises second transmission rails which are fixedly connected to the transmission disc, second power gears which can move along the second transmission rails and axially rotate, second transmission shafts which are driven by the second power gears to rotate and a second output gear which is driven by the second transmission shafts to rotate, and the transmission disc, the second speed changing rails, the second power gears and the second transmission shafts are all located on the back face of the half gear ring.

The invention discloses a brake pad stamping die with good heat dissipation performance, and relates to a brake pad stamping die. The brake pad stamping die comprises a bottom plate, wherein supporting stand columns are fixedly connected to the upper portions of the two sides of the bottom plate; a driving mechanism is fixedly connected to the lower portion of the supporting stand column on the left side; the driving mechanism is rotationally connected with a fan-shaped gear rotating handle; a fixing block is fixedly connected to the upper portion of the middle of the bottom plate; a sliding rack is connected to the middle of the fixing block in a sliding mode; the upper end of the sliding rack is fixedly connected with a mounting frame; fixing plates are fixedly connected to the lower portions of the two sides of the mounting frame; an electric push rod is fixedly connected to the upper portion of one side of each fixing plate; the upper end of each electric push rod is rotationally connected with a swing plate; the lower portion of the other side of each swing plate is rotationally connected with a vertical rod fixedly connected to the upper portion of the corresponding fixing plate; and a connecting shaft is fixedly connected to the upper portion of each swing plate. The electric push rods drive the swing plates to swing, then the connecting shafts are driven to swing, then a refrigerator is driven to swing, so that the interior of the mounting frame is fully cooled and subjected to heat dissipation, and a series of defects caused by too high temperature are effectively avoided.

The invention relates to an urban road and intersection evaluating method based on Kalman filtering. The method includes the steps of 1, acquiring real-time state information fed back by a floating car, and calculating an average number of stopping times of the floating car; 2, establishing a state equation and a measurement equation of a Kalman filter according to road information and the average number of stopping times of the floating car; 3, performing iterative computing with the Kalman filter used in the step 2 so as to acquire a stable optimal value, namely an estimated value of the average number of stopping times of each car; 4, evaluating urban roads and an intersections according to the estimated values of the average numbers of stopping times of the cars. Compared with the prior art, the method has the advantages such as high accuracy, high efficiency and timeliness.

The invention provides a tunnel portal earth retaining device, which is used for utilizing a tube push bench and tube joints to conduct the construction of an underground pedestrian passageway, and the tunnel portal earth retaining device comprises an upper embedded steel plate which is arranged on the inner side upper end of a tunnel portal and a lower embedded steel plate which is arranged on the inner side lower end of the tunnel portal, a plurality of vertical profile steels which are vertically arranged are welded between the upper embedded steel plate and the lower embedded steel plate, every two adjacent vertical profile steels are connected with each other in a welding way through a transverse profile steel which is horizontally arranged, the vertical profile steels and the transverse profile steels form a plurality of square holes in the vertical direction, and the square holes are used for the tube joints and the tube push bench to pass through in construction. The vertical profile steels and the transverse profile steels are used for substituting H-shaped steels, the tube joints are pushed into earth by passing through the vertical profile steels and the transverse profile steels, so that not only can an earth retaining effect be realized, but also the defects caused by the gas cutting of a great number of profile steels can be avoided, and the tunnel portal earth retaining device as well as the underground pedestrian passageway construction system and method, which can improve the construction efficiency, reduce the construction difficulty and save the construction cost, are provided.

The invention relates to a method for preparing cyclopentyl alcohol from cyclopentene through cyclopentyl formate, comprising a reaction kettle (1), an olefin esterification tower (2), a hydrolysis tower (3), an azeotropic distillation tower (4), Stratifier (5) and formic acid recovery tower (6). Under the autocatalysis of formic acid, the raw material cyclopentene and formic acid undergo an addition reaction to generate cyclopentyl formate, and then cyclopentyl formate and water undergo hydrolysis reaction in a hydrolysis tower equipped with a strong acidic cation exchange resin to generate cyclopentyl alcohol and formic acid , formic acid can also be used as a raw material for the addition reaction. The synthesis route proposed by the invention has the characteristics of mild process conditions, high conversion rate, and environmental friendliness.

The invention discloses a preparing method of non-filling type nucleic acid extracting device and application, which comprises the following steps: providing a plastic base material to produce the product; composing with at least one construction unit; setting the construction unit include a cap body of plastic material and a model adsorptive support; setting pipe and beard or cavity on the modeladsorptive support; applying closely with cap body; setting silicon oxide gel layer on the inwall of pipe and beard or cavity; setting at least one sampling hole and one out-sampling hole on the cap body or model adsorptive support corresponding position of pipe and beard or cavity. This invention possesses simple preparing method and cheap cost, which possesses wide using prospect.

The invention relates to a pool table, in particular to an easily detached pool table cushion edged tablecloth wrapping structure. The pool table cushion edged tablecloth wrapping structure comprises a metal cushion, a tablecloth depression bar, an ethylene vinyl-acetate adhesive tape and a cushion edged tablecloth, wherein the bottom surface of the metal cushion which is in contact with a table board surface is provided with a groove; a cloth nailing batten is embedded in the groove; after the cushion edged tablecloth wraps the ethylene vinyl-acetate adhesive tape onto the metal cushion, one end of the cushion edged tablecloth is pressed in the groove on the outer side face of the metal cushion by the tablecloth depression bar, and the other end of the cushion edged tablecloth is fixed with the bottom surface of the cloth nailing batten through code nails. Two ends of the cushion edged tablecloth are firmly fixed to ensure a cushion edged tablecloth wrapping effect; when the cushion edged tablecloth is replaced, the ethylene vinyl-acetate adhesive tape embedded in the groove on the outer side face of the metal cushion and the cloth nailing batten embedded in the groove in the bottom surface of the metal cushion are simultaneously taken out, and the cloth nailing batten is replaced, so that the cushion edged tablecloth is replaced conveniently in a labor-saving manner; as a gluing part does not exist between the cushion edged tablecloth and the bottom surface of the metal cushion, defects brought by tearing the gluing part in the traditional structure are overcome.

The invention provides an installation structure for an assembly type buckle top corner line. The installation structure for the assembly type buckle top corner line comprises a top corner line and aconnecting card, wherein the top corner line comprises a support strip and a decorative strip, the two ends of the support strip are connected with the two ends of the decorative strip, and the support strip is located in the decorative strip, the top and the bottom of the support strip are respectively provided with a hook and a card strip; the connecting card comprises a first connecting memberand a second connecting member perpendicular to the first connecting member, the outer end of the first connecting member is provided with a buckle protruding upwards, the bottom of the second connecting member is provided with a card slot; the hook is engaged with the buckle, the card strip is inserted into the card slot; the first connecting member is fixed at the bottom of a ceiling, the secondconnecting member is fixed on a side wall. Compared with the prior art, the installation structure provided by the invention has the following advantages: the buckle installation method replaces theinstallation method of traditional gluing or nail fixing connection, the invention not only has convenient installation, saves process, saves time and labor, and has good installation effect and highstrength, better waterproof and moisture resistance, environmental protection and no pollution.

The invention provides a natural plant compound fowl feed additive, which is prepared from natural plants such as Acanthopanax senticosus, scouring rush, and Cyrtomium fortunei, and can be mixed with common feed for laying hens, laying ducks and laying gooses into complete feed, avoids the defects generated by medical additives in the feed, and obviously improves the quality of poultry meat and eggs. The eating of eggs produced can strengthen the body, promote development of bones of children, and prevent nyctalopia and hypopsia; and the eggs have oxidation resistant function, can resist cancer and ageing, improve functions of the immunologic system of human body, make patients recover early, contribute to removing age pigment and treating emphysema and hyperthyroidism, and have the function of preventing and treating cerebral arteriosclerosis, cerebral thrombosis, coronary heart disease, and stenocardia, reducing blood pressure, blood-fat, and cholesterin, treating insomnia, dizziness and tinnitus, and preventing and overcoming fatigue.

The invention provides a tunnel portal earth retaining device, which is used for utilizing a tube push bench and tube joints to conduct the construction of an underground pedestrian passageway, and the tunnel portal earth retaining device comprises an upper embedded steel plate which is arranged on the inner side upper end of a tunnel portal and a lower embedded steel plate which is arranged on the inner side lower end of the tunnel portal, a plurality of vertical profile steels which are vertically arranged are welded between the upper embedded steel plate and the lower embedded steel plate, every two adjacent vertical profile steels are connected with each other in a welding way through a transverse profile steel which is horizontally arranged, the vertical profile steels and the transverse profile steels form a plurality of square holes in the vertical direction, and the square holes are used for the tube joints and the tube push bench to pass through in construction. The vertical profile steels and the transverse profile steels are used for substituting H-shaped steels, the tube joints are pushed into earth by passing through the vertical profile steels and the transverse profile steels, so that not only can an earth retaining effect be realized, but also the defects caused by the gas cutting of a great number of profile steels can be avoided, and the tunnel portal earth retaining device as well as the underground pedestrian passageway construction system and method, which can improve the construction efficiency, reduce the construction difficulty and save the construction cost, are provided.

The invention discloses laundry liquid and a preparation method thereof. Mild surfactants with mild washing property, high decontamination capacity, no pollution on the environment, such as fatty alcohol-polyoxyethylene ether (AEO9), dodecyl dimethylaminoacetate (BS-12), dodecyl dimethyl benzyl ammonium chloride (1227), distearyl dimethyl ammonium chloride (D1821), polyethylene glycol 6000DS diester, coconut oil diethanolamine (6501) and the like are prepared into the laundry liquid according to a certain proportion and a process; clothes washed by the laundry liquid have soft textile fibers and comfortable wear; and the laundry liquid is mainly used for washing personal clothes, sheets and bedding bags of households, sheets and bedding bags of hotels and the like.

The invention discloses a boron-containing gradient cemented carbide with a shell structure and a preparation method thereof. The method is to perform boronizing heat treatment on a sintered dense cemented carbide matrix in a boron-containing filler, and the temperature of the heat treatment is slightly lower than that of the hard alloy. The liquidus point of the alloy matrix. The boron-containing gradient cemented carbide has a three-layer structure of surface layer, subsurface layer and core; the surface layer is a shell structure with a uniform distribution of boron-containing phases, the subsurface layer is a gradient transition structure with uniform changes in boron-containing phases, and the core is a structure that does not contain Boron-containing cemented carbide structure; and the concentration of boron-containing phase gradually decreases from the interface between the surface layer and the subsurface layer inwards, and completely disappears at the interface between the subsurface layer and the core. The service performance of the boron-containing gradient cemented carbide is obviously higher than that of ordinary cemented carbide, and the existence of the gradient layer avoids sudden failure caused by the performance difference between the boronizing shell layer and the alloy matrix.

The invention provides a recyclable electric heating control system with electric ripple. The system comprises an electric heating wire, a conducting rod and a strip metal rod. According to the invention, the electric heating wire is clamped through mechanical pressurizing, and has the advantages of compact internal structure and good contact; disadvantages caused by direct electric heating wire gluing can be avoided; and the system has the advantages of good electric and thermal conductivity and simple and convenient processing and can be repaired and used for many times.