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51results about How to "Delayed" patented technology

COVID-19 epidemic situation population situation prediction method based on LSTM

The invention relates to a COVID-19 epidemic situation population situation prediction method based on LSTM, and belongs to the technical field of deep learning. The method comprises the following steps: S1, acquiring epidemic situation data of COVID-19; S2, predicting the population situation of the national COVID-19 epidemic situation; S3, predicting COVID-19 epidemic situations of provinces, autonomous areas and direct administration cities; and S4, predicting the population situation of COVID-19 epidemic situations in cities. Deep learning achieves excellent effects in many fields at present, LSTM has good performance in time series prediction, time characteristics and rules of data can be well mined, and the effect is better than that of a traditional non-parametric model.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

User track similarity judgment method and related device

The embodiment of the invention discloses a user trajectory similarity judgment method, a corresponding device, computer equipment and a computer storage medium, and relates to the technical field ofnetwork security. The user trajectory similarity judgment method comprises the following steps: determining paths with a time sequence of two users; determining the longest common sub-path of the twousers; and determining the track similarity of the two users according to the time overlapping degree of each corresponding adjacent space in the longest common sub-paths of the two users, and / or thenumber of spatial positions contained in the longest common sub-paths, and / or the number of the longest common sub-paths. According to the invention, paths of two users are converted into a time sequence of spatial positions based on the idea of pattern recognition; a time interval covering method is used for replacing a time threshold value, the user track similarity can be accurately obtained, by means of the method, if a single suspicious person starts from the perspective of the single suspicious person, a suspicious gang similar to the single suspicious person can be rapidly found, and conversion from a single user portrait to a group user portrait is achieved.
Owner:WUHAN ANTIY MOBILE SECURITY

Cabinet door air-cooling type constant temperature cabinet system and control method

The invention relates to a cabinet door air-cooling type constant temperature cabinet system and a control method, and solves the problems that the hot gas radiating effect of the back portion of a cabinet is not good, the refrigeration mode is single and the service life is influenced due to continuous working of refrigeration equipment. The system comprises the cabinet. The back portion of the cabinet is provided with a cabinet door; a refrigeration unit is arranged in the lower portion of the cabinet; an external circulation unit is arranged in the upper portion of the cabinet; the back cabinet door is internally provided with an air-cooling chamber; the air-cooling chamber is internally provided with warm-air pipes; the inner side surface of the back cabinet door is provided with a plurality of inner circulation suction ports connected with the warm-air pipes; and the warm-air pipes are communicated with the refrigeration unit. The system controls the refrigeration unit, the external circulation unit and a water-cooling heat radiation device to work intermittently according to the temperature. The advantages of the system are that back cabinet door provides dual functions of heat dissipating and air returning, and the hot air is cooled before entering the refrigerating unit for refrigerating; and the refrigeration unit does not need to work all the time and is allowed to work intermittently, thereby reducing working time of the refrigeration unit and realizing the purpose of energy saving and consumption reducing.
Owner:HANGZHOU JINGSHANG JUNYI TECH CO LTD

Preparation method of partially hydrolyzed polyacrylamide gel blocking agent

The invention relates to a preparation method of a partially hydrolyzed polyacrylamide gel blocking agent. According to the invention, a chrome propionate cross-linking agent is prepared from materials of chromate, a reducing agent and propionic acid according to a molar ratio of 1:(2.5-5.5):(8-20), wherein a reaction temperature is 10-120 DEG C and a reaction time is 5-10h. An auxiliary agent isprepared from components of, by mass: 1-8% of C2-C5 alcohol, 0.5-1.5% of a sulfur-containing oxygen purification agent, 2-8% of polycarboxylic acid, 30-40% of sodium hydroxide, and 50-60% of distilled water, wherein a reaction temperature is 50-100 DEG C and a reaction time is 2-5h. The partially hydrolyzed polyacrylamide gel blocking agent is prepared from components of, by mass: 1-3% of partially hydrolyzed polyacrylamide, 0.2-0.6% of the chrome propionate cross-linking agent, 0.2-0.4% of the auxiliary agent, and balance of water. The auxiliary agent provides functions of retarding, stabilizing and pH value regulating.
Owner:PETROCHINA CO LTD

Electric power and electrical equipment supporting device

ActiveCN107270047AEliminate lateral vibrationLoss of balanceNon-rotating vibration suppressionEngine bedsVertical vibrationElectric power system
The invention discloses an electric power and electrical equipment supporting device. The electric power and electrical equipment supporting device comprises a vertical balancing module, a transverse balancing module, a control module and supporting parts. The transverse balancing module is arranged on the side portion of electric power and electrical equipment and used for balancing the electric power and electrical equipment; and meanwhile transverse vibration can be converted into vertical vibration, and therefore vibration can be eliminated more effectively. The problem that in a traditional technology, due to the fact that only vibration reduction in the vertical direction is paid attention to, the vibration reduction effect is poor is solved. According to the electric power and electrical equipment supporting device, a buffer solution is utilized as an elastic recovery medium, damping can be effectively improved, vibration can be weakened or even interdicted, proper elasticity and supporting force can further be kept, the buffer solution is uniform in texture, and therefore balance can be better kept through a spring. The buffer solution is prepared from raw materials which are low in price, the cost is low, viscidity is good, damping is large, the elasticity recovery capacity is good, and vibration can be effectively weakened.
Owner:王虹

Sectioned shape-control and temperature-control three-dimensional thermal stretch bending forming device

PendingCN109821944ASolve processing problemsRealize multi-point three-dimensional hot stretch bendingWire gauzeTemperature control
The invention discloses a sectioned shape-control and temperature-control three-dimensional thermal stretch bending forming device which is mainly composed of a base, a sectioned insulating box, a forming unit, a hydraulic oil cylinder bracket, a hydraulic oil cylinder, a transformer and a temperature control cabinet, wherein the base is L-shaped and a plurality of T-shaped grooves are formed in the base in the longitudinal direction; the forming unit is mounted in T-shaped grooves through T-shaped slide blocks at the bottom of the bracket; the sectioned insulating box is mounted on a slide block guide rail of the forming unit to form a follow-up structure so as to move along with the forming unit; openings in two sides of the sectioned insulating box are closed by a high-temperature-resistant flexible protecting curtain and an asbestosed wire gauze, so that heat diffusion is reduced; the hydraulic oil cylinder is fixed to the hydraulic oil cylinder bracket and the base, a piston rod of the hydraulic oil cylinder is fixedly connected to a back plate of the forming unit, and displacement of the piston rod is controlled to adjust the position of the forming unit and a positioning function to the forming unit is obtained; a section bar is heated by self resistance, the transformer is connected to the section bar and the temperature control cabinet, and the temperature control cabinet controls heating of a resistance wire and acquisition of thermocouple data. By designing the sectioned shape-control and temperature-control device which has an independent insulating property andmoves along with the section bar in a forming process, the heating efficiency and the temperature control precision are improved, and flexible, efficient and low-cost three-dimensional thermal stretch bending precision forming of hardly processed metal section bars at constant temperature is realized.
Owner:CHANGCHUN UNIV OF TECH

Desulfurization system operation optimization method based on improved PSO-FCM algorithm

ActiveCN112465239ASolving Circulating Pump Scheduling ProblemsFlexible adjustmentForecastingCharacter and pattern recognitionLocal optimumSlurry
The invention relates to a desulfurization system operation optimization method based on an improved PSOFCM algorithm. The method comprises the steps: carrying out the clustering of sample data through the improved PSOFCM algorithm, and building a desulfurization system operation target condition library; an ARIMA model is adopted to predict desulfurization boundary conditions; and guiding the adjustment of desulfurization operation parameters. Compared with the prior art, parameters such as pH, slurry density and the like closely related to desulfurization operation cost are considered simultaneously, the problem of dispatching of a dispatching circulating pump combining a variable frequency pump and a common fixed frequency pump of an existing power plant is solved simultaneously, multi-parameter synchronous adjustment can be performed, and the adjustment mode is more flexible. The traditional FCM algorithm is improved, aiming at the defects that the traditional FCM is greatly influenced by an initial clustering center, is easy to fall into local optimum and is uncertain in clustering number, the PSO algorithm is used for optimizing the traditional FCM algorithm, the local optimum can be avoided. Meanwhile, a clustering effectiveness evaluation function is introduced, and the clustering number with the best clustering effect can be determined.
Owner:DATANG ENVIRONMENT IND GRP +1

Probability prediction type target tracking method

The present invention relates to a probability prediction type target tracking method and is mainly applied to an intelligent machine. However, according to an existing target tracking algorithm, only a track after target filtering is given, so that the target tracking has a delay, and because a complete model in a complex environment can not be obtained, the conventional target tracking algorithm has a limitation in practical application. In order to change the existing state and enable the target tracking method to be suitable for a changeable and complex environment, a new thought framework is proposed, wherein the intelligent machine can detect whether a target object is performing a non-motorized motion, and once the target enters a non-motorized motion stage, the intelligent machine starts Kalman filtration and is capable of giving out results of prediction and tracking in the form of probability.
Owner:阳光暖果(北京)科技发展有限公司

Compound microorganism water purifier and preparation method and application thereof

The invention discloses a compound microorganism water purifier and a preparation method and application thereof. The compound microorganism water purifier is prepared from, by weight, 20-35 parts ofpotassium peroxymonosulfate, 60-80 parts of a cyclodextrin microorganism compound, 40-60 parts of modified titanium dioxide waste residues and 10-20 parts of sodium copper chlorophyllin. According tothe compound microorganism water purifier, water disinfection, water harmful matter pollution degradation, water excessive ammonia nitrogen organic matter conversion and water micro-ecology balance restoration can be fundamentally achieved, the effects of purifying water, increasing oxygen and adjusting the flora are achieved, secondary pollution is avoided, and the advantages of being efficient and environmentally friendly are achieved. The compound microorganism water purifier can be applied to purifying urban sewage or industrial waste water or agricultural sewage, and is wide in application range.
Owner:何美英

Positive pressure wastewater-lifting mechanism for basements

The invention belongs to the technical field of wastewater treatment and particularly relates to a positive pressure wastewater-lifting mechanism for basements, comprising a compressor and a pressureexchange device. A wastewater collector is fitly arranged below the pressure exchange device; a wastewater collection tank is arranged below the wastewater collector and is connected with an externalwastewater collection pipe via a wastewater collection connector; a floater is fitly arranged on the wastewater collection tank and is provided with an ejector rod; a blow-down connector is fitted below the wastewater collection tank and is fitly connected with a discharge pipe; the other end of the discharge pipe is connected with a gravity pipe of a drainage system. The positive pressure wastewater-lifting mechanism for basements is driven by negative pressure, has delayed turn-on and turn-off, and has controllable time, high response speed, thorough wastewater discharge and zero odor; the positive pressure wastewater-lifting mechanism for basements is rarely damaged in moist environments and therefore, has long service life.
Owner:HANGZHOU DIANZI UNIV

Self-piloting damping vacuum diaphragm valve

The invention provides a self-piloting damping vacuum diaphragm valve, and belongs to the technical field of vacuum diaphragm valves. The self-piloting damping vacuum diaphragm valve comprises a diaphragm chamber, an upper diaphragm chamber and an intermediate diaphragm chamber, wherein the top part of an upper housing is connected to atmosphere or a vacuum system; a vacuum channel, a damping channel and at least one atmosphere channel are arranged at the bottom part of an intermediate housing; a damping block is arranged at an outlet in the upper end of the damping channel in a covering, resisting and connecting manner; an intermediate diaphragm sheet is compressed to the inner wall of the bottom part of the intermediate housing through the damping block, and the intermediate diaphragm sheet fits an end port of the atmosphere chamber in a covering, resisting and connecting fitting manner; a damping hole is formed in the damping block and communicates with the damping channel; a connecting rod is arranged in the middle of the intermediate housing; the top part of the connecting rod is fixedly connected to the upper diaphragm sheet; the connecting rod is in penetrating fitting witha through hole in the middle part of the damping block; a valve sheet is fixedly arranged at the bottom part of the connecting rod and fits an outlet of the vacuum channel in a covering, resisting andconnecting manner; the other end of the vacuum channel is connected to a check valve, and the other end of the check valve is connected to the vacuum end. The self-piloting damping vacuum diaphragm valve is delayed to open and close, so that sewage can be completely and cleanly pumped; and the device is stable and reliable to use.
Owner:HANGZHOU DIANZI UNIV

Slope reinforcement implementation method of combining canavalia gladiata urease with biopolymer

ActiveCN113373947AOvercoming constraintsImprove anti-scourabilityHops/wine cultivationTurf growingCanavalia gladiataSoil science
The invention discloses a slope reinforcement implementation method of combining canavalia gladiata urease with a biopolymer. The slope reinforcement implementation method comprises the following steps that 1) broken stone blocks and garbage on the surface of a slope are removed, plant planting holes are dug at equal intervals, slope plant seeds are sown into the plant planting holes, and soil mass is covered and leveled again; 2) canavalia gladiata urease clear liquid, a cementing mixed solution and a biopolymer solution are poured into the plant planting holes, and the canavalia gladiata urease clear liquid, the cementing mixed solution and the biopolymer solution are poured repeatedly at set intervals; and 3) after the slope plant seeds sprout, the canavalia gladiata urease clear liquid, the cementing mixed solution and the biopolymer solution are poured into the plant planting holes again. According to the slope reinforcement implementation method, the anti-scouring capacity of the soil mass can be remarkably improved, the protection strength of vegetation to the slope is enhanced, the compressive strength of the slope is remarkably improved, the problem that a slope matrix is prone to being scoured by rainwater and eroded by wind and sand is solved, and application and popularization are better facilitated.
Owner:CHINA THREE GORGES UNIV +2

Slow-closing type airtight water drainage system

The invention discloses a slow-closing type airtight water drainage system and belongs to the technical field of water drainage systems. The slow-closing type airtight water drainage system comprisesa compressor, a pressure exchange device, a drainage pipe and a sewage storage container. The compressor, the drainage pipe and the pressure exchange device are in fit connection. One end of the drainage pipe is in fit connection with the sewage storage container, and the other end of the drainage pipe is connected with a gravity pipeline of the sewage drainage system. According to the slow-closing type airtight water drainage system, delay of opening and closing is achieved, so that thorough sewage drainage is guaranteed; by using the small pipe for sewage drainage, the occupied space is small, the appearance is attractive, the flux is large, and the airtightness is good; and the water drainage distance is 10-50 m, so that the slow-closing type airtight water drainage system is suitable for long distance water drainage such as bathrooms and water drainage pipes and also suitable for dispersion type centralized drainage places such as cruises and subways.
Owner:HANGZHOU DIANZI UNIV

Biomass heating fire wall and fresh air conditioner integrated system

The invention provides a biomass heating fire wall and fresh air conditioner integrated system. The biomass heating fire wall and fresh air conditioner integrated system comprises a fire wall subsystem and a fresh air conditioner subsystem; the fire wall subsystem comprises a biomass combustion furnace, a smoke inlet pipe, a heat exchange chamber and a smoke exhaust pipe which are sequentially connected; the heat exchange chamber comprises an outdoor wall, an indoor heating wall and a plurality of water capsules; the water capsules are arranged in a hollow interlayer formed between the indoor heating wall and the outdoor wall; the fresh air conditioner subsystem comprises a static pressure chamber which is arranged on the heat exchange chamber in an overlapped manner; and a plurality of ventilation holes are formed in the wall face, making contact with the interior of a room, of the static pressure chamber and connected with the static pressure chamber and the interior of the room. The fire wall subsystem and the fresh air conditioner subsystem are combined, and better practicability is achieved; the side wall space of a building is fully utilized, and the occupied area of the system is effectively reduced; and the fire wall subsystem stores heat through the water capsules while storing heat through the indoor heating wall, heat in smoke is absorbed more fully, the energy utilization rate is high, and energy waste is reduced to the maximum degree.
Owner:HUNAN UNIV OF SCI & TECH

Forming process of automobile front lower control arm

The invention discloses a forming process of an automobile front lower control arm. The forming process comprises the following steps of forming and shaping two blanks at a time, and sequentially carrying out three times of stretching forming and subsequent fractional forming and shaping. Thus, the automobile front lower control arm is thinned and stretched three times, and after step-by-step gradual thinning, the stretching instant stress of the material is slowed down, so that the product is prevented from cracking and wrinkling; and in the subsequent procedures of flanging, punching, hole flanging, trimming and the like, specified requirements are sequentially met in order for all parts on the product through a forming mold, deformation caused by machining damage to an existing semi-finished product in subsequent machining is avoided, the machining sequence is reasonably arranged according to the time difference generated by the machining difficulty and the machining area, and the production efficiency is greatly improved.
Owner:ZHEJIANG SHUNSHI AUTOMOBILE TECH

Damping device for small and medium-sized electromechanical equipment

The invention discloses a damping device for small and medium-sized electromechanical equipment. The damping device comprises a box body, at least three X axis damping modules, a Y axis damping module and a supporting portion. The box body comprises a side wall defined by side plates and a bottom sealed by a bottom plate, the box body is of a semi-opened structure with an opening in the upper portion, and a cavity where the electromechanical equipment is installed is formed inside the box body. The X axis damping modules are arranged between the side wall and the electromechanical equipment and symmetrically distributed on different portions of the electromechanical equipment for supporting the electromechanical equipment. The Y axis damping module is arranged between the bottom plate and the electromechanical equipment to elastically support the electromechanical equipment. The supporting portion is arranged at the bottom of the box body to support the box body. The side wall is of a two-layer structure composed of an inner side plate and an outer side plate. A cavity for containing buffer liquid or buffer media is formed between the two side plates, the thickness of the cavity is 2-4 times that of each side plate, the cavity is divided by multiple cavity units, the cavity units are sealed and do not communicate with one another, and each cavity unit is filled with buffer liquid.
Owner:NANJING SOUTHEAST BUILD ELECTROMECHANICAL SEISMIC RES INST

Cyclone separator

A preferred embodiment of the invention relates to a cyclone separator for a vacuum toilet system, with a casing; an input-side swirl generator, whose input openings impart a swirl to the inflowing fluid; a separating wall arranged in the casing, which encloses the fluid stream in the cyclone separator ring-like and whose interior cross section tapers downstream; and a collection tank in the casing for receiving and accumulating constituents separated out of the fluid. In addition, the invention relates to a wastewater tank and vacuum toilet system having such a cyclone separator.
Owner:AIRBUS OPERATIONS GMBH

Manual control remote button control system for toilet

The invention relates to a manual control remote button control system for a toilet, belonging to the technical field of sewage system. The manual control remote button control system comprises a micro-control device, a discharge pipe, a plate-type lift valve, a negative pressure station, a toilet and a remote control switch, a discharge pipe, a plate-type lift valve, a remote control switch and the micro-control device, wherein one end of the discharge pipe is matched with the negative pressure station, the other end of the discharge pipe is matched with the toilet sewage outlet, and the toilet flush outlet is connected with an inlet pipe through the plate-type lift valve. A manually control remote button control system of that toilet bowl adopts a negative pressure drive, which can ensure that sewage is discharged thoroughly, uses small pipes to discharge sewage, occupies small space, has beautiful appearance, has large flux, is convenient to switch, has good tightness, and has a drainage distance of 10-50m, suitable for long-distance drainage of toilet.
Owner:HANGZHOU DIANZI UNIV

Platinum compound with fikarest configuration as well as preparation method and application of platinum compound

The invention discloses a platinum compound with a fikarest configuration as well as a preparation method and application of the platinum compound. The invention provides a platinum compound with a fikaster configuration. The platinum compound is Pt-(P-(O-R1) (O-R2) (O-R3)) n. The platinum compound with the non-caster configuration has the characteristics that the platinum compound is not cured for more than 1.5 months at the temperature of 30 + / -5 DEG C and can be rapidly cured for a short time at the temperature of more than 140 DEG C, and particularly, any inhibitor does not need to be added when silica gel base materials are vinyl silicone oil and hydrogen-containing silicone oil, so that the platinum compound is particularly suitable for production and use of various single-component addition type silica gel.
Owner:SHANGHAI ZHONGZIXING CHEM IND TECHCO +1

Micro-control controller

The invention discloses a micro-control controller, and belongs to the technical field of blow down systems. A first cavity formed through a spring diaphragm is arranged between a first shell and a second shell, a first atmospheric channel is formed in the first shell, a hollow T-shaped valve rod is arranged in the first cavity, a set of front and back small holes are formed in a valve rod of thehollow T-shaped valve rod, the hollow T-shaped valve rod is sleeved with a valve rod spring, the tail of the hollow T-shaped valve rod is matched with a valve base to form a negative pressure cavity,a rear-portion small hole seal pad is arranged between the hollow T-shaped valve rod and the second shell, the front small hole communicates with the first cavity and a valve rod cavity, the valve base and a third shell form a fourth cavity, a second atmospheric channel and a connecting groove which communicate with the fourth cavity are formed in the third shell, and a cavity connecting channel is formed in the rear portion of the second shell. According to the micro-control controller, negative pressure drive is adopted, opening and closing have delay properties, time is controllable, the response speed is high, waste water can be thoroughly drained, in the humid environment, the controller is not prone to damage, and the service life is long.
Owner:HANGZHOU DIANZI UNIV

A liquid level automatic control distribute liquid collecting device

A liquid level automatic control distribute liquid collecting device belongs to the technical field of sewage treatment and includes a microcontroller, the lower part of the microcontroller is matchedwith a sewage collector, the lower part of the sewage collector is a sewage collection tank, the sewage collection tank is connected with an external sewage tank through a sewage collection joint, asewage passage, a float ball is arranged on the sewage collection tank, a jacking rod is arranged on the float ball, a sewage discharge joint is arranged on the lower part of the sewage collection tank, the sewage discharge joint is matched with one end of a discharge pipe, and the other end of the discharge pipe is connected with a negative pressure station. The liquid level automatic control distribute liquid collecting device adopts negative pressure driving, and is delayed in opening and closing, controllable in time, fast in response speed, thoroughly discharged with sewage, not easy to be damaged in a damp environment, long in service life, and suitable for centralized treatment of rural sewage.
Owner:HANGZHOU DIANZI UNIV

Basement sewage integrated lifting device

The invention relates to a basement sewage integrated lifting device, and belongs to the technical field of sewage treatment. The device is composed by connecting a first casing, a second casing, a third casing, a fourth casing, a fifth casing and a sewage collector, the lower portion of the sewage collector is a sewage collection tank, and the sewage collection tank is connected to a sewage collection pipe outside through a sewage collection joint. The above-mentioned basement sewage integrated lifting device adopts negative pressure driving, and has the delay in opening and closing, the timeis controllable, the response speed is fast, the sewage discharge is thorough, and there is no odor; the device is not easily damaged in a humid environment, and the service life is long.
Owner:HANGZHOU DIANZI UNIV

Homogeneous mixed intelligent oil displacement system, preparation method thereof and corresponding oil displacement method

The invention relates to an oil displacement method for an oil reservoir, in particular to a homogeneous mixed intelligent oil displacement system, a preparation method thereof and a corresponding oil displacement method. Comprising a polymer and an auxiliary agent, the concentration of the polymer is 20-4000 mg / L, and the concentration of the auxiliary agent is 0.2-4 times that of the polymer. The oil displacement system has retardancy, diversity, growing property and permanency. By means of the method, damage to the low-permeability oil reservoir part can be avoided, the oil reservoir can be transformed in a wide range to achieve homogenization, perfect combination of homogenization transformation and efficient displacement can be achieved, and the recovery efficiency can be greatly improved. After being separated out, the polymer can enter smaller rock pores like water, so that the low-permeability driving efficiency is improved, and the problems of produced liquid treatment, safety and environmental protection caused after production are solved; the problems of difficult oil-water separation, substandard water treatment and difficult treatment of a large amount of sludge caused by extraction of a large amount of polymers in the conventional polymer flooding process are fundamentally solved.
Owner:郭志东

A filter cloth dehumidification control system

The invention relates to a dehumidification control system of filter cloth, and belongs to the technical field of condensate water treatment. The dehumidification control system comprises a micro control device and a filter cloth dehumidification device, wherein a condensate water collector is arranged on the lower part of the micro control device in a matching mode, a condensate water collectingtank is arranged on the lower part of the condensate water collector, the condensate water collecting tank is in matching connection with the filter cloth dehumidification device by virtue of a condensate water collecting joint, a floating ball is arranged on the condensate water collecting tank in the matching mode, an ejector rod is arranged on the floating ball, a pollution discharge joint is arranged on the lower part of the condensate water collecting tank in the matching mode, the pollution discharge joint is in matching connection with one end of a discharge pipe, and the other end of the discharge pipe is connected with a negative-pressure station. The dehumidification control system of the filter cloth is driven by negative pressure and has the advantages of time delay in openingand closing, controllable time, high response speed, thoroughness in discharging condensate water, difficulty in damage in a humid environment, long service life and good dehumidification effect.
Owner:HANGZHOU DIANZI UNIV
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