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   measurement is 在 电力工业 分类中 的翻译结果: 查询用时:0.642秒
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measurement is
相关语句
  测量
    The impedance measurement is completed by vector voltage method,including the technologies of testing impedance using auto-balance bridge,10 kHz~5 MHz frequency synthesis,phasicdetection and dual-integral A/D transforming.
    阻抗测量采用矢量电压法,其中包括自动平衡电桥测量阻抗1、0 kHz~5 MHz频率合成、相敏鉴波和双斜A/D转换等技术。
短句来源
    The design of the instrument is compact,the accuracy of measurement is high,relative error of the system is less than 0.5%.
    该仪器整体设计结构简单、测量精度高,经测定系统相对误差小于0.5%。
短句来源
    In the designed hardware, AT89C51 single chip computer and many kinds of new type circuit chip (including: special power measuring chip-CS5460A, DS1302 calendar/clock chip, SMS0601 LCD, X5045 serial memory) are used for design. The hardware circuit is simplified, the meter's anti-interference ability is enhanced and the precision of measurement is also advanced.
    设计中以AT89C51单片机为核心,采用多种新型集成电路芯片(包括电能计量专用芯片CS5460A、DS1302日历/时钟芯片、SMS0601液晶显示器、X5045串行存储器)进行接口设计,简化了硬件电路,提高了电能表的抗干扰能力和测量精度。
短句来源
    4) High accuracy of measurement is assured.
    4.这种方法保证了较高的测量准确度。
短句来源
    A series of experiments show that the uncertainty of this multiplier for power measurement is less than 1×10-3 at a power factor of 0.1 and within a frequency range of 40Hz to 3.1kHz.
    实验表明此电压乘法器在功率因数等于0.1、频率在40Hz~3.1kHz时的功率测量误差小于1×10~(-3)。
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  测量是
    The network based measurement is a new direction of the measuring technology of mechanical parameters, and the virtual instrument is the base of network based measurement.
    网络化测量是机械量电测技术新的发展方向 ,而虚拟仪器是网络化测量的基础。
短句来源
    Direct current is widely applied on subway, electric railway and metalsmelt. The direct current measurement is also an important part ofelectromagnetic measurement.
    直流大电流在城市地下铁道、电气化铁路及金属冶炼等工业中都有重要的应用,直流大电流的测量是这些领域中不可或缺的一项技术,也是电磁测量领域的一个相对独立的重要的问题。
短句来源
    Transformer's DC resistance measurement is one of the primary item before transformer leaving factory and precautionary test. The inherent time constant of transformer is quite long, so it is very important to study how to shorten the measuring time.
    电力变压器直流电阻测量是变压器出厂及预防性试验的主要项目之一,但电力变压器固有的时间常数较大,研究缩短电力变压器直流电阻的测量时间具有重要意义。
短句来源
    Harmonic measurement is an important embranchment of harmonic problem. It is not only the main basis of studying the harmonic problem, but also the starting point of analyzing the problem.
    谐波测量是谐波问题的一个重要分支,它是谐波问题研究的主要依据,也是研究分析问题的出发点。
短句来源
    Regular dielectric loss measurement is very necessary for the high voltage electric equipment in order to monitor its insulating state.
    为了监督高压电力设备的绝缘情况,定期的对其进行介质损耗测量是非常必要的。
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  “measurement is”译为未确定词的双语例句
    The error of the measurement is less than 0.01N, which has been higher than the government standard.
    仪器精度≤0.01N(牛顿),高于国家行业标准要求。
短句来源
    The type tests of AEVT show that the accuracy for measurement is better than 0.2 level and protective lovel is 3P level.
    整个AEVT的型式试验结果表明,系统的计量准确度优于0.2级,保护准确度达到3P级。
短句来源
    3. Circle Center Fitting (CCF), a phasor method of frequency measurement, is innovated and proved, and it has the practical value of engineering.
    3、提出并论证了“圆心拟合法”相量测频方法,具有一定的应用价值。
短句来源
    When we measure the amount of partial discharge, the accuracy of measurement is varied constantly by outer interference, it's important to distinguish partial discharge pulse from interference pulse, so how to judge insulation quality according to partial discharge information became the study direction of many scholars and site personnel.
    如何干确判断局放脉冲和干扰脉冲成为一个重要环节。 如何全面掌握设备内部局放的信息来进行绝缘诊断也一直是很多学者和现场试验人员研究的方向。
短句来源
    In chapter two^ three and four, the new measurement is elaborated in the principle of graphic analysis and site application. In the end ,the author summarized, and out looked the future.
    文章的第二、三、四章,作者从图形分析方法的原理、具体实现和现场应用等角度,全面阐述了这种新的局部放电测试方法。
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  measurement is
An effective approach combining theoretical analysis and mathematical calculations with experimental measurement is presented in this paper to determine the grinding area and allowance for compensating the boresight error performance of the radome.
      
Compared with the method via non-modulated electron beams, the instrument of measurement is simplified.
      
It is predicted that the superposition persistence time will increase if the measurement is carried out with a low accuracy and a minimum variance.
      
A method of SEM linear measurement is proposed in which the reference marker displayed on the screen is used as a standard.
      
The sensitivity of this method can be high because frequency measurement is one of the most accurate measurements in physics and metrology.
      
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This paper presents a method of determining the actual average temperature rise of the stator winding of a high-voltage a.c. machine, by measurig-the resistance of that winding under load by means of Kelvin bridge. The method discussed herein has the following special features:1) The installation for measurement is at zero potential, so that safety is assured in operation,2) By taking appropriate measures, disturbance of the a.c. components is Kept away from the bridge circuit, so that the installation...

This paper presents a method of determining the actual average temperature rise of the stator winding of a high-voltage a.c. machine, by measurig-the resistance of that winding under load by means of Kelvin bridge. The method discussed herein has the following special features:1) The installation for measurement is at zero potential, so that safety is assured in operation,2) By taking appropriate measures, disturbance of the a.c. components is Kept away from the bridge circuit, so that the installation of a complicated filter in the galvanometer circuit can he omitted. While the galvanometer still operates steadily.3) A unified method for choosing measuring elements can he applied to various ratings of machines.4) High accuracy of measurement is assured. The maximum error of resistance measurement is within 0.3%, if proper measuring elements were chosen.In the paper the result of measurement and its error are analyzed.

在本文中讨论了一种用双臂电桥测量高压交流电机在运行时的定子绕组电阻,从而得到定子绕组实际平均温升的方法。这种方法的特点是: 1.测量装置处于零电位,保证了操作的安全。 2.采取了适当的措施,将交流干扰消除在电桥线路之外。这样就避免了在检流计回路中采用复杂的滤波装置,而检流计仍能稳定工作。 3.对各种不同的电机可用统一的测量元件选择方法。 4.这种方法保证了较高的测量准确度。当合理选用测量元件时,电阻测量的最大误差可在0.3%以下。 文中分析了电阻测量结果及其误差,还列举了一些试验结果。

A method for the measurement of short-circuit high current with a magnetic potentiometer of high precision and electronic integrator is recommended for use in industry.In this paper the measuring principle and the frequency response of the magnetic potentiometer and electronic integrator as well as data selection and error analysis are described.The accuracy of this method is 1 % and the range of measurement is over 102-105 V.

本文叙述了测量短路大电流的原理,测量装置主要部件的参数确定、频率响应和误差分析。为工业上测量交流短路大电流提供了一种方法。整个测量装置的精度为1%,测量电流在10~4~10~5A以上。

The measurement of HF parameters of capacitors by the transmission method is discussed here in detail. We have proposed and investigated a transmission system. By using the lumped impedance power distributor and RF vector voltmeter, the impedence-frequency characteristics of fixed capacitors can be measured easily in the freqency range up to 1000MHz. The system is also applicable, if necessary to even wider range of measurement. The selfinductance of capacitors can be measured down to 10~(-4) μHz, and the equivalent...

The measurement of HF parameters of capacitors by the transmission method is discussed here in detail. We have proposed and investigated a transmission system. By using the lumped impedance power distributor and RF vector voltmeter, the impedence-frequency characteristics of fixed capacitors can be measured easily in the freqency range up to 1000MHz. The system is also applicable, if necessary to even wider range of measurement. The selfinductance of capacitors can be measured down to 10~(-4) μHz, and the equivalent series resistance of capacitors can be measured down to 10~(-2) Ω. The method is simple and effective, and the accuracy of measurement is good for practical purpose. The method proposed has already been adopted as a standard method in the country.

本文详细地讨论了用传输法测量电容器的高频参数。我们提出和试验了一种传输系统,用集总参数功率分配器和矢量电压表可以在极低频到1000兆赫频段内方便地测得固定电容器的阻抗频率特性和高频参数,其测试范围尚可扩展到更高的频段。采用这种集总参数功率分配器传输系统可以测量低至10~(-4)毫亨的固有电感量和10~(-2)欧的等效串联电阻值,并且具有良好的重复性。这一系统已被采纳为我国测量固定电容器高频参数的部定标准。

 
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