Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

401 results about "High frequency vibration" patented technology

A piston vibration reduction structure for a hydraulic breaker

ActiveCN224453650UPolyamideCylinder block
This utility model relates to a vibration damping structure for a hydraulic breaker piston, including a cylinder and a piston disposed within the cylinder, and a damping ring disposed between the piston and the cylinder. The damping ring is made of polyimide or aromatic polyamide. By placing a damping ring between the piston and the cylinder, the piston amplitude can be limited, thereby solving the problem of scoring of the cylinder and piston and improving the service life of the hydraulic breaker. By using polyimide or aromatic polyamide as the material for the damping ring, these two materials have advantages such as high temperature resistance, high strength, chemical stability, and low coefficient of thermal expansion. This makes the damping ring less prone to breakage under high-frequency vibration or cyclic load, and it can withstand repeated impacts for a long time, improving the service life of the damping ring. Furthermore, the deformation of the damping ring under long-term load is small, thereby effectively limiting the piston amplitude, solving the problem of scoring of the piston and cylinder, and improving the service life of the hydraulic breaker.
Owner:YANTAI AIDI PRECISION MASCH CO LTD

A high frequency vibrating screening device for zirconolite separation

The utility model discloses a high frequency vibrating screen device for zirconium titanium ore sorting relates to mineral processing field. A high frequency vibrating screen device for zirconium titanium ore sorting, including screening box, still include: a plurality of oblique settings screening board, from top to bottom equal interval staggered fixed connection in screening box, the both sides of screening box are opened in the symmetry and have the flow through cavity, the utility model discloses through the consistent screen hole design of multilayer screening board and high frequency vibration cooperation, has realized zirconium titanium ore material's efficient continuous screening, and small particle is fast and sieves when first contact screen surface, and large particle is repeatedly refined through multistage screening board, finally through first discharge port and second discharge port accurate separation, effectively improved the screening efficiency, and through continuously to the feed pipe conveying material, and the device can continuous operation, need not stop machine to take and put material, and the continuity of production is greatly improved, reduces manpower cost and equipment loss, especially suitable for the efficient production demand of large -scale zirconium titanium ore processing enterprise.
Owner:JIANGSU YUXIAO ZIRCONIUM TITANIUM MINING CO LTD

A method for preparing TC4ELI titanium alloy bar for improving fatigue performance of ultrasonic bone cutter

PendingCN122327126AIngotTitanium alloy
This invention discloses a method for preparing TC4ELI titanium alloy rods with improved fatigue performance of ultrasonic bone scalpels, comprising the following steps: preparing TC4ELI titanium alloy ingots with optimized composition; mixing sponge titanium, aluminum-vanadium alloy, aluminum briquettes, titanium-iron alloy, and titanium dioxide in a certain proportion and pressing them into electrodes, followed by three vacuum melting processes; subjecting the TC4ELI titanium alloy ingots to multi-pass upsetting and drawing forging to obtain square billets; heating the square billets for billet rolling, followed by multi-pass hot continuous rolling into coils; subjecting the coils to annealing, rounding, oxide scale removal, straightening, and grinding processes to obtain finished rods; and tempering the finished rods in a vacuum furnace. The TC4ELI titanium alloy rods obtained by this method possess excellent ultra-high cycle fatigue performance, making them suitable for ultrasonic bone scalpel cutting heads subjected to high-frequency vibration and impact loads, effectively extending the service life of ultrasonic bone scalpels and reducing the risk of scalpel breakage during surgery.
Owner:XIAN SHENGTAI METAL MATERIALS CO LTD

A coke balling machine

ActiveCN224388931UReduce mixing into finished productsReduce dust accumulationNon-rotating vibration suppressionDirt cleaningCokeStructural engineering
The utility model provides a kind of coke balling machine, belong to balling machine technical field, comprising: box, hammering subassembly, sieve plate subassembly, locking mechanism, discharge screening mechanism and dust receiving subassembly;Box is equipped with balling chamber, screening chamber, discharge chamber and dust receiving chamber, is equipped with lining in balling chamber, hammering subassembly is arranged in balling chamber, and hammering subassembly is connected with the output end of driving device;Two sides of screening chamber are equipped with slide respectively, sieve plate subassembly is arranged on slide, and sieve plate subassembly is below hammering subassembly;The device cooperates through sieve plate subassembly, discharge screening mechanism and dust receiving subassembly, improves the separation effect of globular coke and chippings, dust, reduces the problem that chippings mix into finished product or dust accumulation;Sieve plate subassembly is fixed by locking mechanism, both ensure the stability of sieve plate subassembly under high-frequency vibration, avoid structural damage caused by direct rigid contact, to prolong the service life of equipment and keep screening accuracy.
Owner:ANNENG EXPERIMENTAL EQUIP (ANSHAN) CO LTD

Anti-adhesion quail egg shelling device

ActiveCN224291236UFood shapingPackagingEggshellBiology
The utility model relates to food processing technical field especially relates to a kind of anti-adhesion quail egg shelling equipment, including support frame, processing cabin, ultrasonic generator and ultrasonic transducer etc., processing cabin is installed in the upper portion of support frame, the upper portion of processing cabin is sealed processing area in front side, the upper portion of processing cabin is continuously extended and penetrates and is divided into from the lower processing area in rear side and inner lower portion, ultrasonic generator is installed in sealed processing area front part, ultrasonic transducer is connected in the side portion of ultrasonic generator, the output end of ultrasonic transducer is inserted into the inboard portion of sealed processing area.The utility model is through the high-frequency vibration wave of ultrasonic generator and transducer, soften the inner membrane adhesion between quail egg shell and egg body, significantly reduce the adhesion risk of egg shell and egg body in shelling process, solve the problem of high breakage rate caused by adhesion of traditional equipment.
Owner:JIANGXI CHUANGWEI FOOD CO LTD

Stamping integrated equipment and method of energy storage steel row

The present application relates to the field of stamping equipment, especially to a kind of stamping integrated equipment and method of energy storage steel row, including rack, the top of the rack is fixedly connected with workbench, the top of the workbench is installed with bottom plate, the top of the bottom plate is installed with lower die plate, the rear side of the workbench is installed with fixed frame, the front end of the fixed frame is fixedly connected with hydraulic cylinder in upper portion, the bottom of the hydraulic cylinder is fixedly connected with mounting plate in telescopic end, the bottom of the mounting plate is installed with upper die plate by bolt, the bottom of the upper die plate is all penetrated and slidably connected with guide pillar, the bottom end of the guide pillar is all fixedly connected with middle pressure plate, ultrasonic vibration head is arranged in bending stage, and high-frequency vibration is transmitted to bending plate by vibration piece and hydraulic medium, high-frequency dynamic stress disturbance is applied to material while the mechanical bending force acts, can promote material internal dislocation movement and plastic flow, reduce local deformation resistance, to effectively reduce bending forming force.
Owner:FUJIAN SHENGKAILUN NEW ENERGY TECH CO LTD

A thickness sorting apparatus for metal button blanks

ActiveCN224405780UStructural engineeringPipe
The utility model discloses a thickness sorting equipment of metal button, specifically relates to button sorting equipment field, including work table, vibration frame, oblique multistage material guide funnel and airflow shower head, vibration frame sets up at the upper end of work table, and oblique multistage material guide funnel sets up in the inner chamber of vibration frame, and the bottom of oblique multistage material guide funnel is provided with sorting mouth, and airflow shower head sets up at the bottom of fixed air pipe, through vibration frame and oblique multistage material guide funnel carry out high -frequency vibration, make button keep sliding and loose and throw state, and the button of different thicknesses relies on self -gravity and vibration inertia and passes three groups of sorting mouth from small to big in turn, even if the material of stacking appears, vibration impact force can instant loose material too, avoid button accumulation and mutual jam, through the high -pressure airflow of airflow shower head injection can real -time blow -off oblique multistage material guide funnel inside, clean up accumulated dust or small impurity, keep oblique passage unobstructed, reduce material jam risk, avoid the thickness misjudgment caused by dust accumulation, keep the accurate grading standard.
Owner:HUIZHOU HESHENG METAL PROD CO LTD

Carbon fiber composite material with high frequency band damping performance and preparation method thereof

ActiveCN120504936BImprove high-frequency damping capabilitiesHigh mechanical strengthEpoxyFiber
The present application belongs to the technical field of carbon fiber composite materials, and particularly relates to a carbon fiber composite material with high-frequency damping performance and a preparation method thereof. Through multi-component synergistic modification of an epoxy resin matrix, a nitrile rubber composition and a boron nitride composition, combined with carbon fiber surface treatment and a segmented curing process, a multi-scale damping energy dissipation network is constructed. The material exhibits excellent damping performance in a high-frequency vibration environment, while also having high mechanical strength and interfacial bonding force, which can significantly reduce the damage risk caused by vibration transmission of sports equipment, and is suitable for high-end sports equipment field, promoting the industrial application of carbon fiber composite materials in high-frequency damping scenarios.
Owner:SHANDONG UNIV +1

Plastic electrostatic sorting feeding machine

The utility model discloses a kind of plastic electrostatic sorting feeding machines, it is related to sorting feeding technology field, including base, base top is fixedly connected with sorting machine body, second rotating roller is rotatably connected with one side inside sorting machine body, rotating column is rotatably connected with one side inside sorting machine body, rotating column other end extends out sorting machine body outside, rotating column outside is fixedly sleeved with first rotating roller, first rotating roller and second rotating roller outside are sleeved with conveying belt, rubber plate is symmetrically hot melt connected with equal distance outside conveying belt, sorting machine body one side is fixedly connected with feed hopper, sorting machine body is fixedly connected with discharge pipe away from feed hopper side, anti-blocking assembly is installed on base top.The utility model uses above structure, can accurately act on feed hopper jam area, efficiently dredge caked plastic, and pushing process is stable and controllable, material abrasion or too much dust will not be caused due to high-frequency vibration aggravation, also will not interfere subsequent electrostatic sorting effect.
Owner:NINGBO WEIERCHI PLASTIC CO LTD

Dam centrifugal test model reservoir water level controllable adjusting device and method

ActiveCN120704422BLevel controlHydraulic modelsModel testActuator
The application provides a dam centrifugal test model reservoir water level controllable adjusting device and method, relates to the geotechnical centrifugal model test technical field, and includes a model box. An overburden dam model is arranged at one end in the model box. A placeholder box is arranged at the end away from the overburden dam model in the model box. A guide positioning mechanism is fixedly installed at the bottom end of the model box. When the hydraulic actuator is started and frequently lifted or lowered, the generated vibration is transmitted to the elastic connecting mechanism. The support of the first support platform in the elastic connecting mechanism is matched with the second buffer platform, the second buffer spring and the elastic damping of the movable connecting rod, and the fine adjustment of the third working platform and the precision guide rail pair. The high-frequency vibration transmitted by the hydraulic actuator under high g value is significantly inhibited, water level fluctuation distortion is avoided, and the reliability of test data is improved.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1

An automatic powder cutting machine

The utility model discloses an automatic cut powder machine relates to food processing equipment technical field, including the conveying group, cutting mechanism and the hanging pole that set gradually, the conveyor belt of conveying group is equipped with through -hole and is linked with the air groove, through pneumatic auxiliary reduction noodle stick adhesion, guaranteeing the smooth conveyance and product integrity, and cutting mechanism contains rotary outer tube, the cutting board of inside setting, cutting knife and piezoelectric stack, realizes synchronous flying shear, and allows noodle stick continuous conveying high -efficient cutting, piezoelectric stack drive cutting knife high -frequency vibration, ensure that the incision is smooth, effectively prevents sticking, and cutting knife is immersed when rotating in the sink, and completes self -cleaning and lubrication, and the noodle stick of cutting is accurately positioned, and is automatically hung by the liftable hanging pole, and the machine sets automatic conveying, precision flying shear, vibration clean cutting and automatic hanging pole in one, and the production efficiency, noodle stick quality and automation level are improved significantly, and the labor intensity and maintenance demand are reduced.
Owner:YUNNAN MINCHUANG MACHINERY MANUFACTURING CO LTD

Cutting tools with spiral grooves and vibration damping tapered shanks

This utility model discloses a spiral-grooved vibration-damping tapered shank cutting tool, relating to the technical field of BT-type tapered shank cutting tools. Specifically, it is a spiral-grooved vibration-damping tapered shank cutting tool, comprising a flange and a BT-type tapered shank. The surface of the BT-type tapered shank is provided with spiral grooves, which are filled with elastic damping material. This spiral-grooved vibration-damping tapered shank cutting tool, by designing spiral grooves in the BT-type tapered shank and filling them with elastic damping material, utilizes the multi-head spiral structure of the spiral grooves to disperse vibration energy in multiple directions. At the same time, the elastic damping material absorbs high-frequency vibrations through shear deformation. This "rigid-flexible composite" structural design solves the contradiction between vibration suppression and structural strength in BT-type tapered shank cutting tools, and also provides high structural reliability without affecting the original strength of the BT-type tapered shank. It offers a BT-type tapered shank cutting tool that combines high rigidity, good vibration reduction performance, and low manufacturing cost.
Owner:TIANJIN HERLY CUTTING TOOL TECH CO LTD

Anti-interference blade tip timing sensor and anti-interference method for high speed rotating blades

The application discloses an anti-interference blade end timing sensor and an anti-interference method for a high-speed rotating blade, belongs to the technical field of sensors, and solves the problem that the real-time anti-interference capability of the existing method is weak, so that the reliability of the blade end timing signal of the blade in a dynamic environment cannot be guaranteed, and comprises a differential processing module, an adaptive filtering module, an anti-attenuation compensation module and a front-end evaluation module; in the application, common-mode electromagnetic interference and mechanical vibration interference are effectively suppressed through the virtual differential method of the differential processing module and the generation of a derived reference signal, and the signal distortion problem of the high-speed rotating blade in a strong electromagnetic and high-vibration environment is solved; meanwhile, the adaptive filtering module can further suppress high-frequency vibration noise and electromagnetic noise, and through variational modal decomposition and NLMS filter dynamic optimization, the signal signal-to-noise ratio is guaranteed, and the method is suitable for high-speed and high-noise working conditions.
Owner:HUANENG SHANTOU HAIMEN POWER GENERATION CO LTD +1

Full-automatic fluorite sand production line device

The utility model discloses a full -automatic fluorite sand production line device, it includes base, and the upper surface of base is fixedly connected with processing box through support frame, and the side surface of processing box is fixedly connected with no. The output of no. The outside fixed connection of axle body has the disc body, and the inside fixed connection of disc body has the pressure crushing cylinder and the positioning shaft, and the outside swing joint of positioning shaft has the beating hammer, and the bottom of processing box is slidably connected with the first screening net through the mouth, and the mouth fixed connection of processing box has the second screening net. Through above -mentioned structure, through the axle body drive positioning shaft makes beating hammer can carry out fling and hit, and the pressure crushing cylinder and beating hammer cooperate, form multistage crushing effect, then through the cam to the plate body and resist, thereby make the first screening net can produce high -frequency vibration, effectively prevent the screen hole and block, in addition, cooperate the second screening net fixed in the first screening net top, can form the grading screening structure.
Owner:HUBEI CHANGRUNMING TECH CO LTD

Centrifugal fan with self-cleaning function

PendingCN122328385AImpellerBall bearing
This invention relates to the field of centrifugal fan technology, specifically a centrifugal fan with a self-cleaning function. The fan includes a casing with an air inlet frame fixedly connected to its surface and an air outlet. An impeller is rotatably connected to the inner wall of the casing. The impeller consists of a main shaft and multiple blades uniformly fixedly connected to the main shaft. A motor is fixedly connected to the surface of the casing. This invention draws power from the impeller's main shaft via a transmission assembly. After deceleration by the internal gear ring of the gear and gear, the ball bearings at the end of the push rod roll along the inclined plane of the triangular block, converting the circumferential motion into axial vibration of the slip ring. This vibration causes the filter element to shake off accumulated dust. The entire process eliminates the need for an independent vibration motor, avoiding additional power supply lines and control costs. Simultaneously, the internal gear ring deceleration keeps the impact frequency low, and combined with the rolling friction of the ball bearings, the operating noise is significantly lower than existing solutions using high-frequency vibration motors, meeting the quiet operation requirements of household air conditioners.
Owner:JINGJIANG ZHIQIU AIR CONDITIONING EQUIPMENT CO LTD

An ultrasonic vibration electromagnetic induction heating additive manufacturing device

PendingCN122322524ANon-contact ultrasoundUltrasonic vibration
This invention discloses an ultrasonic vibration-based electromagnetic induction heating additive manufacturing apparatus, comprising a frame, an induction heating nozzle assembly, an ultrasonic vibration component that concentrates vibration energy at the outlet of the induction heating nozzle assembly, a receiving platform, and a motion mechanism. The induction heating nozzle assembly is mounted on the frame, and the ultrasonic vibration component is located on the outer periphery of the induction heating nozzle assembly with a gap between them. The receiving platform is mounted on the motion mechanism and positioned below the induction heating nozzle assembly. This invention features an ultrasonic vibration component on the outer periphery of the induction heating nozzle assembly. This component generates high-frequency vibration and efficiently transfers vibration energy to the filament, thereby reducing the resistance of the molten metal during flow, ensuring smooth flow, and enhancing interlayer bonding strength, resulting in a tighter and more reliable connection between filament layers. Furthermore, the use of non-contact ultrasonic vibration effectively avoids problems such as contact thermal damage to the ultrasonic vibration element caused by high-temperature molten metal.
Owner:HUNAN UNIV OF SCI & TECH

Automatic peanut seed weighing device

The application relates to the technical field of peanut seeds, and discloses a peanut seed automatic weighing device which comprises a main body, a main hopper is arranged in the main body, a feeding disc mechanism is arranged below the main hopper, the feeding disc mechanism comprises a distributor, a transmission gear, a transmission gear ring, a transmission disc, a worm gear structure and a return spring, a plurality of distributors are arranged at the top end of the transmission disc, the transmission gear is arranged at the top end of the transmission disc, the transmission disc is arranged in the main hopper, the worm gear structure is arranged at the bottom end of the transmission disc, a top frame is arranged at the bottom end of the main body, and a flow guide sliding pipe is arranged in the top frame. The micro-amplitude high-frequency vibrator is used for breaking the bridge to prevent blockage, the feeding disc mechanism is used for realizing soft distribution of the seeds, mechanical damage is avoided, a pneumatic unloading mode is adopted, a high-frequency pulse electromagnetic valve is matched with a Venturi pulse jet nozzle, and problems such as inaccurate quantification and single function are solved.
Owner:WUXI XINGBAILI MASCH EQUIP CO LTD

A max phase reinforced three-dimensional network tin-based lead-free solder and a preparation method thereof

ActiveCN121267458Bhigh strengthImprove plasticitySolder matrixComposite solder
The application discloses a MAX phase reinforced three-dimensional network tin-based lead-free solder and a preparation method thereof, and belongs to the technical field of lead-free solder. The MAX phase reinforced three-dimensional network tin-based lead-free solder is characterized in that the MAX phase reinforcing phase is distributed in the form of a three-dimensional continuous network skeleton at the grain boundary of a tin-based lead-free solder matrix; and the MAX phase reinforcing phase forms a continuous network penetrating through the whole tin-based lead-free solder matrix. The application also discloses an application of the MAX phase reinforced three-dimensional network tin-based lead-free solder in a high-temperature, high-load and high-frequency vibration scene. Through process innovation and performance optimization, the application aims to finally prepare a "high-strength, high-plasticity and high-temperature stability" tin-based three-dimensional network composite solder, solves the problem that a traditional tin-based single-component lead-free solder is prone to deformation and cracking due to thermal stress and mechanical load, improves the reliability of electronic packaging, and expands the application range of the tin-based lead-free solder in high-demand fields.
Owner:NANJING INST OF TECH

A fiber optic sensor for high frequency vibration detection

The application provides a fiber sensor for high-frequency vibration detection, comprising a sensor diaphragm which is a deflected-hole fiber sensor diaphragm or a deflected-slot fiber sensor diaphragm, and a single-mode optical fiber, a light source, a circulator, an amplifier and a collection card connected in sequence; the deflected-hole fiber sensor diaphragm and the deflected-slot fiber sensor diaphragm are formed by presetting a plurality of holes or arc-shaped slots on the diaphragm which are not overlapped with the geometric center of the diaphragm and are symmetrically distributed, then the plurality of holes or arc-shaped slots are collectively deflected relative to the geometric center of the diaphragm, so that the holes or arc-shaped slots on the diaphragm finally present an asymmetric structure. The sensor device has the characteristics of high sensitivity, strong anti-interference ability and convenient production, and greatly increases the range of frequency domain response compared with the sensor made of the traditional diaphragm.
Owner:NORTH CHINA ELECTRIC POWER UNIV

A highly integrated power supply controller

This utility model relates to the field of power controller technology and discloses a highly integrated power controller, including a fixed base. An ear plate extends integrally outward from the bottom end of the fixed base, and ear plate holes are formed on the surface of the ear plate. The ear plates are symmetrically distributed on both sides of the bottom end of the fixed base, and the ear plate holes are circular through holes with parallel axes. The ear plates are fixed by bolts. A threaded hole is formed on the surface of the fixed base, through which a fixing bolt passes. A slot is formed on the inner side of the fixed base, and a locking block is slidably engaged on the inner side of the slot. This utility model uses the triangular prism-shaped protrusions and recesses of the interlocking fixing mechanism to form a mechanical interlock, restricting the relative rotation of the upper and lower protrusions. Combined with the axial clamping force of the bolt sleeve, a dual anti-loosening mechanism of "threaded connection + physical engagement" is constructed, which can withstand high-frequency vibrations (such as vehicle driving and industrial equipment operation), and its anti-loosening effect is significantly better than that of traditional structures.
Owner:HEFEI CHUNXIAO ZHIYUAN TECHNOLOGY CO LTD

Electromagnetic drive type sucking structure of massager

The utility model relates to the massage device of massage device driving structure field's electromagnetic drive formula sucking structure, including fixed bolster and electric control massage subassembly, electromagnetic drive source is by the casing and sets up in the coil support and cylindrical magnetic jar of casing inside constitution, the periphery of coil support is wound with the electromagnetic coil, power supply and electromagnetic coil all with main control circuit board electric connection, coil support installs in the inside of magnetic jar along the opening of magnetic jar, and can along the opening direction of magnetic jar telescopic activity, the bottom of coil support is connected with the airbag for being driven by coil support and makes the massage mouth produce negative pressure telescopic activity. When working, coil support telescopic activity along the inside of magnetic jar, thereby drive airbag along the axial direction of magnetic jar and make reciprocating motion, make the inside of sucking mouth form negative pressure, realize the technical effect of noise reduction through non - contact magnetic force drive, can absorb the part high - frequency vibration energy that coil support does linear telescopic motion produces, ensure that can eliminate part mechanical vibration feeling when working.
Owner:ZAISHENG TECH (SHENZHEN) CO LTD

Vibration reduction device for warp knitting machine bed and method thereof

PendingCN122429194APhysicsHydraulic pressure
The present application relates to the field of textile machinery and equipment damping, specifically warp knitting machine bed damping device and method thereof; containing damping base, negative Poisson's ratio lattice metal bearing framework, corrugated air chamber, venturi micro flow channel, composite fluid and electromagnetic coil and controller and other modules; The system fills the shear thickening and magnetorheological mixed composite fluid in the bearing cavity, cooperates with the bearing framework with three-dimensional interconnected pores, and occurs local shear thickening under high frequency impact; The core is that the controller extracts the high frequency vibration characteristics of the main shaft motor, combines the air chamber pressure pulse to solve the dynamic kinetic energy and total stiffness demand, and actively adjusts the electromagnetic coil current and duty cycle; The present application effectively avoids the dynamic hardening defect of traditional hydraulic damping, and realizes the active adjustment type energy consumption and self-adaptive compensation of equivalent stiffness for high frequency periodic impact.
Owner:福建俊诚纺织有限公司 +1

A rapid sampling and detecting device for oilfield development

The utility model relates to oil detection technical field, concretely relates to a kind of oilfield development rapid sampling detection device, including support plate, hydraulic cylinder output end is fixedly connected with connecting plate, motor output end is fixedly connected with gear one through shaft coupling, gear one outside is equipped with chain, drilling rod side wall is fixedly connected with gear two, connecting pipe one intercommunication turbine pump output end with filter inside, connecting pipe two connects sampling tank one with sampling tank two inside.The utility model is when entering sampling tank one after petroleum after filter, start ultrasonic homogenizer, make oil, water, solid particle etc. in sample fully mix by high-frequency vibration, form uniform stable suspension or emulsion, ensure the representativeness and accuracy of subsequent detection, sensor carries out detection to petroleum sample, and the preliminary detection parameter of sample in sampling tank two inside can be quickly viewed parameter display screen.
Owner:YANCHANG OIL FIELD