One suitable definition of significant figure is introduced and the reasonable data treatment result in measuring resistance with voltmeter-ammeter method is obtained.
本文介绍了一种较具适用性的有效数字的定义，并给出了伏安法测电阻时数据处理的合理结果。
An infinite wire carrying standard high current perpendicular to the geometric center of the clamp ammeter should be the ideal method for the clamp ammeters calibration.
钳形电流表理想的校准方法是用标准电流源对一根无限长导线加测试电流，并使该导线垂直穿过被校钳形表的几何中心。
In this method, a constant voltage source (v) is placed in series with the unknown resistor (r) and an ammeter (IM).
在此方法中，恒压源(V)与未知电阻(R)和安培计(IM)相串联。
Therefore, additional instructions load current ammeter in the motor controller, which is a simple and practical method for indicating the maximum load.
为此，可在电机控制器上附加指示负载电流的安培计，这是一种简单而实用的方法用以指示达到最大负载。
The traditional measure method of the power withstand test is to use the voltage meter, ammeter, power analyzer, frequency analyzer etc to measure the waveform and parameters of the power signals.
传统的工频耐压试验是通过电压表，电流表，功率分析仪，频谱分析仪等等来分别测量波形及其各个参数的。
The invention provides a time calibrating method for ammeter verification. In the method, a time server, a verification system server and a plurality of verification bench bodies are provided;
本发明提供一种用于电能表检定的时间校准方法，包括提供时间服务器、检定系统服务器和以及多个检定台体；
The invention provides a time calibrating method for ammeter verification. In the method, a time server, a verification system server and a plurality of verification bench bodies are provided;
本发明提供一种用于电能表检定的时间校准方法，包括提供时间服务器、检定系统服务器和以及多个检定台体；
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