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precision testing     
相关语句
  精度检测
     Research on positioning precision testing methods in GPS continuously operating reference station system
     GPS连续运行参考站系统定位精度检测方法研究
短句来源
     Essential Discussing of the Precision Testing Ways Based on the Photoelectricity Tracking Testing Equipment
     光电跟踪测量设备精度检测方法初探
短句来源
     This essay makes a discussion in detail about the structure and measuring principleof the CCD (Charge Coupled Devices )diameter measuring instrument and introduces themain technology of the general linear-array CCD high precision testing circuit and improving the testing precision.
     本文就CCD(ChargeCouPledDevices)测径仪的结构与测量原理做了概括性的论述.并介绍通用的线阵CCD高精度检测电路及提高测试精度的关键性技术.
短句来源
     The system detects the circle moment,velocity,displacement,acceleration,jump of input and output axes by the computer timely. It realizes the dynamic indexing precision and static indexing precision testing on dimensional globoid indexing cam mechanism.
     系统通过计算机实时检测输入轴和输出轴的扭矩、速度、位移、加速度、跃度,实现了对空间弧面分度凸轮机构的动分度精度检测和静分度精度的检测。
短句来源
  精密测量
     The method of Allan variance is often used to characterize the performance of ring laser gyro and other precision testing instruments abroad are introduced.
     介绍了国外常用于评估环形激光陀螺和其它精密测量仪器性能的A llan方差法.
短句来源
  精度测试
     Acquisition speed, gain setting, sampling method, zero calibration technology, changing gain method and dynamic signal acquisition, circuit adjusting, precision testing and so on are analysed qualitatively and quantitatively on the basis of technology, theory or practice with the view points of authors' in this paper.
     从技术上、理论上或实践上对采集速度、增益设置、采样方法、校零校准技术,变增益方法与动态信号采集、电路调试和精度测试等问题进行定性定量分析,并提出笔者的见解。
短句来源
     Till now, the Field I/O Device based on EPA designed by us has passed the precision testing, the EMC(electric- magnetic compatibility) testing, and the EPA communication consistency testing, and has also achieved successful application in the EPA control system of industrial field.
     目前我们丌发的基于EPA的现场I/O设备已经通过了精度测试、电磁兼容性测试和EPA通信一致性测试分析,并在工业现场的EPA控制系统中得到了成功的应用。
短句来源
     The results show that the developed airborne navigating precision testing system is effective, and the presented evaluating method of CEP is feasible.
     结果表明,研制的机载导航精度测试系统是有效的,提出的CEP误差计算方法是可行的。
短句来源
     Now, the new generation control system based on the Industrial Ethernet technology, high-speed parallel bus and embedded processor has passed the precision testing, EMC(electric-magnetic compatibility) testing, and has also achieved successful application in industrial field.
     目前,我们开发的基于工业以太网、高速控制站内部总线和嵌入式微处理器技术的新一代PLC系统已通过了精度测试、可靠性测试和电磁兼容性测试一系列测试分析,并在工业现场中得到了成功应用。
短句来源
     P & T test system for implanted electrical pump well makes true test with high accuracy for temperature and pressure of electrical pump and transmission of pressure data accurately by simple way which is the only high precision testing system being proper cost, not only measuring down hole pressure, but also conducting pressure built up test.
     永置式电泵井压力温度测试系统实现了电泵井压力温度的高精度测试,且用较简单的办法实现了压力数据的高精度传输,是目前国内仅有的既能测井下流压、又能做压力恢复测试的高精度测试系统。
短句来源
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  精度验证
     Through the precision testing and correcting, the seepage quantity is simulated and predicted by the simulation function which is the basis to reinforce the dangerous soil rock dam.
     经精度验证或修正后,模拟并预测渗流量,为病险土石坝的防治提供依据。
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      precision testing
    The application of a new approach, design for performance, for high-temperature alloy development, design analysis, and remaining life assessment, based on short-time high-precision testing, is described in this paper.
          
    High-precision testing installation for gas-adsorption measurements in ranges of 4.2-300°K and 1-105 Pa
          
    High-temperature dilatometric high-precision testing installation
          
    High-precision testing unit to determine permittivity and magnetic-permeability tensor of ferrites at a frequency of 9.5 GHz
          
    The advantages of the hot tensile test are that its duration can be more closely controlled by the experimenter and also that the technique is more convenient, since high precision testing machines are available.
          
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    This paper reviews wear test to be able to carry out in EP four-ball tester on the basis of precision test data, provides precision requirement of wear test in fourball tester at home, and demonstrates the effect of the precision on temperature and speed. It raises an objection against ASTM D 4172 precision value and equipment requirement, and adopts an attitude of negating to constantly import four-ball wear tester.

    本文以精密度试验数据为依据,论述了磨损试验可以在极压四球机上进行。提供了国内四球机磨损试验精密度要求,对温度和速度的影响作了论证。本文对ASTM D 4172精密度值和时设备的要求提供了异议。对继续引进磨损四球机持否定态度。

    Methods are introduced for applying Ion-selective electrode to determine cyanide in plating waste water. In the water sample to be determined, cations can be complexly masked with EDTA, anions such as S~(-2), I~-, S_2O_3~(2-), and some organic reducers and surfactant can all be removed with KMnO_4 by oxidation. According to precision test, S=0.004-0.009; CV%=±7.9-±1.8. From accuracy test, the rate of recovery is 102%~103%. The lower concentration determined is 0.05mg/L, the middle concentration is...

    Methods are introduced for applying Ion-selective electrode to determine cyanide in plating waste water. In the water sample to be determined, cations can be complexly masked with EDTA, anions such as S~(-2), I~-, S_2O_3~(2-), and some organic reducers and surfactant can all be removed with KMnO_4 by oxidation. According to precision test, S=0.004-0.009; CV%=±7.9-±1.8. From accuracy test, the rate of recovery is 102%~103%. The lower concentration determined is 0.05mg/L, the middle concentration is 0.1mg/L, and the high is 0.5mg/L.

    本文对应用离子选择电极测定电镀废水中的氰化物提供了方法。待测水样中的阳离子用EDTA络合掩蔽,S~(2-),I~-,S_2O_3~(2-)等阴离子以及有机还原性物质和表面活性物质,用KMnO_4氧化除去。精密度试验S=0.004—0.009cv%=±7.9-±1.8;准确度试验百分回收率为102%—103%。测定的低浓度为0.05mg/L;中浓度为0.1mg/L;高浓度为0.5mg/L。

    The paper gives an analysis on the random errors caused by vibration signals sampled directly and input to the computer. Formulas for the control of random phase errors are developed and curve fitting is adopted in solving for the errors caused by rounding-off in the ADC (analog-digital converter). This ensures that the vibration parameters as sampled directly and input to the computer sustain a high measured precision. Precision test has been taken and the test data correspond well with those...

    The paper gives an analysis on the random errors caused by vibration signals sampled directly and input to the computer. Formulas for the control of random phase errors are developed and curve fitting is adopted in solving for the errors caused by rounding-off in the ADC (analog-digital converter). This ensures that the vibration parameters as sampled directly and input to the computer sustain a high measured precision. Precision test has been taken and the test data correspond well with those from theoretical analysis.

    使用计算机直接采集动态信号产生的随机误差作了全面的分析,从理论上推导出控制相位随机误差的公式,并采用曲线拟合法解决由A/D转换器的舍入而引起的误差。从而使计算机直接采样算出的振动参数有很高的精度。通过精度试验,试验数据与理论分析相符。

     
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