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68results about How to "Evenly compensated" patented technology
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Optical-characteristic measurement apparatus and fundus-image observation apparatus
An eye-anterior-part observation system receives light reflected from an eye anterior part of the eye under measurement illuminated by an eye-anterior-part illumination light source. A movement-distance calculation section measures the displacement of the eye from an eye anterior image by the eye-anterior-part observation system. A wavefront compensation device compensates the wavefront of light reflected or transmitted. A wavefront-measurement section projects light on the eyeground, and receives light reflected from the eyeground through the wavefront compensation device. A calculation apparatus measures wavefront aberrations, based on the measured displacement of the eye and a light-receiving signal by the wavefront-measurement section. A wavefront-compensation-device control apparatus generates a control signal based on the wavefront aberration, and outputs to the wavefront compensation device to compensate the wavefront. A stage with a motor moves the wavefront compensation device in a direction transversing the optical axis of the reflected light, based on the displacement of the eye.
Owner:KK TOPCON
Optical-characteristic measurement apparatus and fundus-image observation apparatus
An eye-anterior-part observation system receives light reflected from an eye anterior part of the eye under measurement illuminated by an eye-anterior-part illumination light source. A movement-distance calculation section measures the displacement of the eye from an eye anterior image by the eye-anterior-part observation system. A wavefront compensation device compensates the wavefront of light reflected or transmitted. A wavefront-measurement section projects light on the eyeground, and receives light reflected from the eyeground through the wavefront compensation device. A calculation apparatus measures wavefront aberrations, based on the measured displacement of the eye and a light-receiving signal by the wavefront-measurement section. A wavefront-compensation-device control apparatus generates a control signal based on the wavefront aberration, and outputs to the wavefront compensation device to compensate the wavefront. A stage with a motor moves the wavefront compensation device in a direction transversing the optical axis of the reflected light, based on the displacement of the eye.
Owner:KK TOPCON
Display substrate driving device and method and display device
InactiveCN104376829AEnsure screen display qualitySolve fever problemStatic indicating devicesComputer moduleDisplay device
The invention provides a display substrate driving device and method and a display device. The display substrate driving device comprises a feedback module and a processing module, wherein the feedback module is used for generating feedback voltage based on fluctuation amplitude of voltage of public electrode signals when the voltage of the public electrode signals in the display substrate fluctuates, the processing module is used for superposing the feedback voltage and the gamma reference voltage to generate a first gamma voltage, the first gamma voltage is used for generating and driving gray scale voltage of a pixel electrode of the display substrate, and the difference between the gray scale voltage and the fluctuated voltage of the public electrode signals meets the condition that luminance information displayed by pixels is kept constant. Accordingly, by adjusting the voltage of the pixel electrode, coupling fluctuation of the public electrode signals can be effectively and uniformly compensated and suppressed, image display quality of the display device is guaranteed, and the problem of heating of a compensation circuit can be effectively solved.
Owner:BOE TECH GRP CO LTD +1
Organic light emitting display device and driving method thereof
InactiveUS20140168188A1Evenly compensatedCathode-ray tube indicatorsInput/output processes for data processingScan lineDisplay device
An organic light emitting display device and a driving method thereof that can stably compensate for a threshold voltage of a driving transistor. The organic light emitting display device includes pixels positioned at intersection portions (crossing regions) of scan lines and data lines, each pixel including the driving transistor having a gate electrode initialized to a voltage of an initialization power source before a data signal is supplied; power source lines coupled to the pixels in a column direction parallel with the data lines; and an initialization power source generator generating the initialization power source to the pixels via the power source lines. In the organic light emitting display device, the initialization power source generator controls the voltage of the initialization power source supplied to each pixel, corresponding to the gray scale of the data signal to be supplied to the pixel.
Owner:SAMSUNG DISPLAY CO LTD
Data receiving device
InactiveUS7418038B2Reduce error rateEvenly compensatedSynchronisation information channelsBaseband system detailsUltrasound attenuationDigital data
A data receiving device includes a reference clock signal transmitted through a differential conductor pair, estimating attenuation characteristics in the differential conductor pair serving as a transmission path of the reference clock signal, and compensating a transmission path attenuation of an NRZ signal based on the estimated attenuation characteristics. Because the reference clock repeats a transition between 0 and 1 at the same period as NRZ data period without fail, it is possible to estimate high frequency attenuation characteristics of a conductor by observing the amplitude of the reference clock at the receiving end. Characteristic control of a compensation filter is performed with respect to the NRZ signal to reproduce a proper transmission signal from a signal waveform that has been deteriorated by the attenuation caused in a long-distance transmission of high-speed digital data using the differential cable.
Owner:SONY CORP
Data receiving device
InactiveUS20050084020A1Evenly compensatedReduce error rateSynchronisation information channelsBaseband system detailsUltrasound attenuationDigital data
A data receiving device according to the present invention includes a reference clock signal that is transmitted through a differential conductor pair, an estimation means for estimating attenuation characteristics in the differential conductor pair serving as a transmission path of the reference clock signal, and a compensation means for compensating a transmission path attenuation of an NRZ signal based on the estimated attenuation characteristics. Since the reference clock repeats a transition between 0 and 1 at the same period as NRZ data period without fail, it is possible to estimate high frequency attenuation characteristics of a conductor by observing the amplitude of the reference clock at the receiving end. Based on the estimation, characteristic control of a compensation filter is performed with respect to the NRZ signal. Thus, it is possible to reproduce a proper transmission signal from a signal waveform that has been deteriorated by the attenuation caused in a long-distance transmission of high-speed digital data using the differential cable, and propagation skew due to positive and negative asymmetry of the differential pair.
Owner:SONY CORP
Electron emission display device and control method of the same
An electron emission display device and a control method of the same. The electron emission display device includes a display region having a plurality of scanning lines and a plurality of data lines; a plurality of pixels arranged in regions defined by the scanning lines and the data lines; a data driving unit for transmitting a data signal to the data lines; a scanning driving unit for transmitting a scanning signal to the scanning lines; and a controlling unit for identifying display data for indicating a brightness displayed by the pixels, and correcting the input data input into the pixels using compensation coefficients corresponding to the pixels. In this electron emission device, the input data is corrected in the controlling unit by multiplying the compensation coefficients by the input data.
Owner:SAMSUNG SDI CO LTD
Mobile communications terminal for compensating automatic exposure of camera and method thereof
ActiveUS20060198627A1Shorten timeStably compensateTelevision system detailsPrintersAdaptive filterSelf adaptive
A method for compensating an automatic exposure of a camera in a mobile communication terminal. The method includes determining a presumptive error value based on an average luminance value of an input current image frame and a particular target luminance value, selecting a convergent coefficient value based on the determined presumptive error value, determining a weight value of an adaptive filter based on the determined convergent coefficient value, and determining an exposure value for a next image frame based on the selected weight value, the determined presumptive error value and the exposure value of the current image frame.
Owner:LG ELECTRONICS INC
Radio frequency filter with cavity structure
A radio frequency filter with a cavity structure is provided. The radio frequency filter includes a housing having an inner hollow portion to have a cavity and open from one side of the housing, a cover sealing the open side of the housing, and a resonant element disposed inside the hollow housing. A through hole is formed at a part of the cover, corresponding to the resonant element, and a tuning element is installed covering the through hole, for frequency tuning. The tuning element is formed of a material having a different thermal expansion coefficient from a thermal expansion coefficient of a material of the cover.
Owner:KMW INC
Motor drive device
ActiveCN105191116ALower latencyEvenly compensatedElectric motor controlGeneral control strategiesMotor driveViscous friction
A motor drive device according to the present invention drives a motor while carrying out feedback control so that an actual operation follows a command. The motor drive device comprises: a feedback control unit for carrying out feedback control by outputting a torque command; and a viscous friction calculation unit for calculating a viscous friction torque compensation value by multiplying a speed command by a viscous friction coefficient. The motor drive device drives a motor on the basis of a drive signal created by adding the viscous friction torque compensation value to the torque command. The motor drive device is provided with an evaluation index measurement unit for measuring an overshoot amount and positioning stabilization time by inputting a position command and a motor position or a load position, and a servo adjustment unit for carrying out positioning operations a plurality of times by changing a viscous friction coefficient and determining a viscous friction coefficient so that the overshoot amount is a designated value or the positioning stabilization time is the minimum value.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Automatic optical fiber transmission delay locking and equalization method
ActiveCN104426600AEffectively filter out jitter noiseReal-time measurementTime-division multiplexTransmission monitoring/testing/fault-measurement systemsUltrasound attenuationNarrow range
Owner:四川泰富地面北斗科技股份有限公司
Pixel and organic light emitting display using the same
ActiveUS8242981B2Evenly compensatedDesired luminanceElectrical apparatusElectroluminescent light sourcesPower flowControl signal
A pixel is provided including an OLED having anode and cathode electrodes. A second transistor controls current supplied from a first power supply to a second power supply via the OLED. A first transistor is coupled between a gate electrode of the second transistor and a data line and is configured to turn on when a scan signal is supplied to a scan line. A first capacitor is coupled between the first power supply and the gate electrode. A second capacitor is coupled between the anode electrode and the gate electrode. A fourth transistor is coupled between the second capacitor and the anode electrode and is configured to turn on when a control signal is supplied to a control line. A third transistor is coupled between the second transistor and the anode electrode and is configured to turn off when a signal is supplied to a light emitting control line.
Owner:SAMSUNG DISPLAY CO LTD
High magnification compact zoom lens
The present invention is directed to high magnification compact zoom lenses that are reduced in diameter of groups of lens pieces closer to the imaging plane to provide downsized lightweight zoom lenses of magnification as high as 20 diameters, with an image stabilizer or vibration compensating mechanism being also reduced in dimensions. An exemplary improved high magnification zoom lens has four groups of lens pieces, namely, the first or leading lens group G1 of positive refractivity in the foremost position closer to the subject, the second lens group G2 of negative refractivity, the third lens group G3 of positive refractivity, and the fourth lens group G4 of positive refractivity in the rearmost position closer to the imaging plane, all arranged in this order. In displacing the entire lens optics of the zoom lens from the wide-angle end to the telephoto end, the second lens group G2 are moved toward the imaging plane and the fourth lens group G4 are moved to compensate for a varied position of the resultant image while the first and third lens groups, G1 and G3, have their respective positions fixed along the optical axis. The zoom lens satisfies the requirements as defined in the following formulae: f3 / f4>2.0 and v4>65 where f3 is a focal length of the third lens group G3, f4 is the focal length of the fourth lens group, v4 is an average of Abbe contrasts of all the convex lens pieces in the fourth lens group G4.
Owner:TAMRON
Projection lens unit
InactiveUS7023629B2Smooth slidingImprove accuracyElectrographic process apparatusMountingsCamera lensOptical axis
A projection lens unit compensates for thermal expansion and contraction. The unit comprises a coupler at the front surface of a CRT, a lens unit body for projecting an image onto a screen by controlling and magnifying the light from the CRT, a plurality of legs secured to the coupler for supporting the lens unit body at more than three points, a slide mechanism (latch arms and latch engaging slots provided between the legs and the lens unit body for slidably supporting the legs for movement along the optical axis relative to the lens unit body, and expansion / contraction bars provided between the legs and the lens unit body for compensating for the thermally induced expansion / contraction, with one end engaged with a leg and the other end engaged with the base of the lens unit body.
Owner:SEKINOSU
A power transformer active noise control method based on convex combination adaptive filters
ActiveCN106603038ASmall steady state errorEvenly compensatedAdaptive networkNoise controlAdaptive filter
The invention provides a power transformer active noise control method based on convex combination adaptive filters so as to harmonize conflict between convergence speed and steady-state error in a power transformer active noise control algorithm. In the combination filters, one filter adopts a variable-step-size FxLms algorithm based on a versiera function to enable faster convergence speed and time-varying tracking performance to be obtained in the system operation early stage; and while the other filter adopts a fixed-small-step-size FxLms algorithm to ensure small steady-state error after system convergence, and meanwhile, to compensate the stabilization problem of the variable-step-size algorithm due to step change under the steady state. In combination coefficient selection, the modified versiera function is utilized to replace a conventionanl Sigmoid function, thereby preventing exponent operation, reducing system calculation complexity, and improving sensitiveness of combination coefficients to overall errors; the algorithm is allowed to have fast convergence performance, and meanwhile, can obtain smaller steady-state error; and compared with the conventional algorithm, the method has better overall performance.
Owner:WUHAN UNIV
Pixel and organic light emitting display device using the same
InactiveUS20140071029A1Evenly compensatedLeakage current can be minimizedStatic indicating devicesSolid-state devicesImaging qualityScan line
There are provided a pixel and an organic light emitting display device using the same capable of improving image quality. A pixel includes an organic light emitting diode, a first transistor, a second transistor and a second capacitor. The first transistor controls the amount of current supplied from a first power to the organic light emitting diode coupled to a second electrode of the first transistor, corresponding to a voltage applied to a second node. The second transistor is coupled between the second electrode of the first transistor and the second node so as to be turned on when a scan signal is supplied to a scan line. The second capacitor is coupled between the second electrode of the first transistor and a control line.
Owner:SAMSUNG DISPLAY CO LTD
Production process for high-precision bearing roller for rail transit
The invention relates to a production process for a high-precision bearing roller for rail transit. The production process comprises the following steps of step 1, cold heading: after drawing steel byutilizing a four-station high-speed cold header, upsetting the drawn steel into a roller blank; 2, heat treatment which is a full-automatic mesh belt furnace heat treatment flow production line; 3, hard grinding 1; 4, hard grinding 2; 5, ball base surface processing; 6, hard grinding 3; 7, superfinishing, in which 8 oilstones are adopted to perform vibration back and forth to process a raceway surface of a roller; 8, eddy current inspection, in which eddy current inspection equipment produced by German IBG is adopted and is installed on a superfinishing machine to realize unfolding of the roller so as to perform 100 percent eddy current inspection which is mainly used for detecting defects on the surface of the roller and cracks of internal tissues of the roller; and 9, packaging. The production process has the advantages that through four-station multi-formation, the forming precision of a product can be guaranteed, a metal flow direction of a material can tend to be reasonable at the same time, and the service life of the product is prolonged.
Owner:JIANGSU LIXING GENERAL STEEL BALL +1
Predistorter for compensating for nonlinear distortion and method thereof
InactiveUS20120154040A1Evenly compensatedAmplifier with control circuitsAmplifier modifications to reduce noise influenceNonlinear distortionEngineering
The predistorter may include: a predistortion filter predistorting an input signal to provide an output signal; a predistortion output estimation unit estimating the characteristics of a nonlinear device based on a signal processed by the nonlinear device and the output signal, and calculating a desired output signal of the predistortion filter by using the estimated characteristics of the nonlinear device; and an adaptive algorithm driving unit comparing the output signal with the desired output signal to output an error as a comparison result, calculating a filter coefficient according to which the calculated error is minimized, and providing the calculated filter coefficient to the predistortion filter in order to update a filter coefficient of the predistortion filter.
Owner:ELECTRONICS & TELECOMM RES INST
Tunnel lighting device, system and method utilizing sunlight
ActiveCN112728491AHigh damage rateEasy maintenanceMechanical apparatusLighting heating/cooling arrangementsIlluminanceLight guide
The invention discloses a tunnel lighting device, system and method using sunlight. The device comprising a light guide, wherein the light guide is connected to a diffuser mounted in a tunnel through an optical fiber, the light guide is also internally provided with a first illumination sensor and a lamp, the first illumination sensor is used for collecting illumination intensity in the light guide, and the lamp is used for detecting the illumination intensity in the light guide; the lamp is used for adjusting the illumination intensity in the light guide device. When illumination intensity in the light guide device is insufficient, illumination intensity is compensated by utilizing the illumination intensity of the lamp, and compensated illumination intensity is conducted to the diffuser through the optical fiber, so the light beams received in the diffuser are preliminarily mixed in the light guide device; and furthermore, the light emitted by the diffuser has no obvious brightness difference, chromatic aberration or color temperature change, illumination compensation is smoother, and a purpose of stepless dimming is achieved.
Owner:四川纵横交安科技有限公司
Predistorter for compensating for nonlinear distortion and method thereof
InactiveUS8421534B2Evenly compensatedAmplifier with control circuitsAmplifier modifications to reduce noise influenceNonlinear distortionEngineering
The predistorter may include: a predistortion filter predistorting an input signal to provide an output signal; a predistortion output estimation unit estimating the characteristics of a nonlinear device based on a signal processed by the nonlinear device and the output signal, and calculating a desired output signal of the predistortion filter by using the estimated characteristics of the nonlinear device; and an adaptive algorithm driving unit comparing the output signal with the desired output signal to output an error as a comparison result, calculating a filter coefficient according to which the calculated error is minimized, and providing the calculated filter coefficient to the predistortion filter in order to update a filter coefficient of the predistortion filter.
Owner:ELECTRONICS & TELECOMM RES INST
Dispensing compensation system and compensation method based on glue flow detection
ActiveCN112570204AEvenly compensatedStable Compensation TechnologyLiquid surface applicatorsCoatingsControl systemDrive shaft
The invention discloses a dispensing compensation system and compensation method based on glue flow detection. The dispensing compensation system comprises a glue receiving mechanism, a fixed seat, anoptical fiber sensor, an amplifier, a PC industrial personal computer, a driver and a dispensing execution motor. The fixed seat is arranged under a dispensing needle of dispensing equipment, the receiving mechanism is arranged on the middle upper portion of the fixed seat, the optical fiber sensor is arranged on the upper portion of the fixed seat and located over the receiving mechanism, the optical fiber sensor is connected with the amplifier through a connecting wire, the driver is connected with the dispensing execution motor through a connecting wire, and the dispensing execution motoris connected with a driving shaft of the dispensing equipment. The proportional value of dripping speed changes is automatically calculated according to different dripping speeds, the speed or air pressure of a dispensing control system is automatically adjusted in an equal proportion, the effect of stably compensating glue is achieved, the compensation technology is stable, the debugging efficiency and accuracy are improved, and good market application value is achieved.
Owner:SHENZHEN AXXON AUTOMATION
Electronic thermometer
InactiveCN101126664AEvenly compensatedAccurate measurementThermometers using electric/magnetic elementsUsing electrical meansEngineeringSignal processing
The utility model relates to an electronic thermometer, comprising a temperature inducing component used for getting temperature signal and a temperature computing device which processes temperature signal. The temperature computing device transfers the temperature signal which the temperature inducing component gets into temperature value through combining the first sampling frequency and the second sampling frequency; wherein, the first sampling frequency is higher than the second sampling frequency. The core idea of the invention starts from the physiological consideration and makes more accurate and reliable and stable temperature measuring using fluctuation law of heat compensation caused by beating heart as a sampling frequency. Because the temperature computing device grasps real temperature rise-starting point and temperature value through a higher first sampling frequency before the similar or estimated second sampling frequency to heart beating frequency is combined to transfer the temperature signal which the temperature inducing component gets into a temperature value, temperature measurement is more stable; furthermore, a temperature predicting value can be made by using specific formula or counting method as predicting result of predicting body temperature measuring, so as to lower the measuring time.
Owner:九江青雷医学科技有限公司
Communication-in-motion antenna cosine scanning inertial navigation course correction method
The invention discloses a communication-in-motion antenna cosine scanning inertial navigation course correction method. A cosine scanning method is adopted to search a satellite signal; only rotation of an azimuth axis exists in the method and pitching motion can be omitted, so that control complexity can be lowered; in addition, when a becoming machine is not high in precision, a signal deviation curve is obtained by a circular cone scanning mode, and randomness occurs, so that the method is more suitable for communication-in-motion equipment with not high becoming machine precision, thereby further saving cost; through an AGC signal difference value, the antenna azimuth deviation can be compensated through a proportion control method; a mode adopting the AGC signal maximum value inverse solution navigation course for azimuth compensation is performed; and by adoption of the method, the linear relation between AGC signal cosine scanning left and right difference value and azimuth deviation angles and the optimal linear coefficient can be found, so that a complex calculation process can be omitted; and in addition, through proportional control, compensation can be more stable, and click disturbance can be lower.
Owner:SHANDONG INST OF AEROSPACE ELECTRONICS TECH
Wide Range, High Resolution Frequency Monitor
ActiveUS20130241531A1Increase sampling rateReduce resolutionFrequency to pulse train conversionLow-pass filterImage resolution
A frequency monitor provides high resolution frequency monitoring over a range of input signal frequencies by measuring the time period of the signal to produce a raw frequency value and then filtering the raw frequency value with a low pass filter to remove an error component caused by quantization effects at high input signal frequencies. The system automatically accommodates changes in the input frequency eliminating a need for manual adjustment of the system based on anticipated measured frequencies.
Owner:ROCKWELL AUTOMATION TECH
Energy-saving type catalytic bed system with controllable temperature
InactiveCN103486601AUniform air intakeUniform adsorptionIncinerator apparatusDesorptionHeat exchanger
The invention relates to an energy-saving type catalytic bed system with the controllable temperature. The energy-saving type catalytic system comprises a gas inlet heater, a catalytic bed and a heat exchanger. A gas inlet channel and a gas outlet channel are alternately formed between a furnace body inner surrounding plate and a furnace body outer surrounding plate. The inlet of the gas inlet channel is formed in an upper end plate, and the outlet of the gas inlet channel is formed between a lower end plate and the furnace body inner surrounding plate. The inlet of the gas outlet channel is formed between the upper end plate and the furnace body inner surrounding plate, and the outlet of the gas outlet channel is formed in the lower end plate. The heater is arranged in a furnace body corresponding to the outlet of the gas inlet channel. A gas outlet flow guide cover is arranged on the lower face of the middle of the lower end plate corresponding to the outlet of a gas outlet cover. A catalytic tail gas inlet, a catalytic tail gas outlet, a catalytic gas inlet, a catalytic gas outlet, a desorption gas supply inlet and a desorption gas supply outlet are formed in the heat exchanger. By the adoption of the energy-saving type catalytic bed system, heat efficiency of the catalytic bed is effectively improved, the heat loss is reduced, the heat recovery utilization rate, combustion efficiency and the purification rate are improved, heat exchange is increased, heat energy is more reasonably utilized, and the energy saving and emission reduction requirements are met.
Owner:赛智环保科技(天津)有限公司
Projection Optical System, Exposure Equipment and Exposure Method
InactiveUS20080123074A1Good performanceLarge numberPhotomechanical apparatusUsing optical meansPhysicsOptical path
A projection optical system is a system with good imaging performance based on well-balanced compensation for aberration associated with image height and aberration associated with numerical aperture, while ensuring a large effective image-side numerical aperture in the presence of a liquid in the optical path between the projection optical system and an image plane. The projection optical system forms an image of a first plane on a second plane. An optical path between an optical member located nearest to the second plane out of optical members with a refractive power in the projection optical system, and the second plane is fillable with a predetermined liquid. The projection optical system satisfies the condition of 0.02<NA×WD / FA<0.08, where NA is a numerical aperture on the second plane side of the projection optical system, WD a distance along the optical axis between an optical member located nearest to the first plane in the projection optical system, and the first plane, and FA a maximum of effective diameters of all optical surfaces in the projection optical system.
Owner:NIKON CORP
Active Noise Control Method for Power Transformers Based on Convex Combined Adaptive Filter
ActiveCN106603038BSmall steady state errorEvenly compensatedAdaptive networkNoise controlAdaptive filter
The invention provides a power transformer active noise control method based on convex combination adaptive filters so as to harmonize conflict between convergence speed and steady-state error in a power transformer active noise control algorithm. In the combination filters, one filter adopts a variable-step-size FxLms algorithm based on a versiera function to enable faster convergence speed and time-varying tracking performance to be obtained in the system operation early stage; and while the other filter adopts a fixed-small-step-size FxLms algorithm to ensure small steady-state error after system convergence, and meanwhile, to compensate the stabilization problem of the variable-step-size algorithm due to step change under the steady state. In combination coefficient selection, the modified versiera function is utilized to replace a conventionanl Sigmoid function, thereby preventing exponent operation, reducing system calculation complexity, and improving sensitiveness of combination coefficients to overall errors; the algorithm is allowed to have fast convergence performance, and meanwhile, can obtain smaller steady-state error; and compared with the conventional algorithm, the method has better overall performance.
Owner:WUHAN UNIV
Electron emission display device and control method of the same
An electron emission display device and a control method of the same. The electron emission display device includes a display region having a plurality of scanning lines and a plurality of data lines; a plurality of pixels arranged in regions defined by the scanning lines and the data lines; a data driving unit for transmitting a data signal to the data lines; a scanning driving unit for transmitting a scanning signal to the scanning lines; and a controlling unit for identifying display data for indicating a brightness displayed by the pixels, and correcting the input data input into the pixels using compensation coefficients corresponding to the pixels. In this electron emission device, the input data is corrected in the controlling unit by multiplying the compensation coefficients by the input data.
Owner:SAMSUNG SDI CO LTD
Large-compensation-amount heating and ventilation pipeline construction method
PendingCN113513650AEasy to fixEasy to useFlanged jointsPipeline expansion-compensationControl engineeringControl theory
Owner:CHINA CONSTR SECOND BUREAU INSTALLATION ENG
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