既然通断性测试往往涉及到多导线装置，因此利用一套开关系统将欧姆表自动连接到每根导线就非常有用。
Given that continuity testing often involves multi-conductor devices, a switch sys tem is useful to connect the ohmmeter to each conductor automatically.
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。
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.
电能计量综合误差是由电压互感器的合成误差、电流互感器的合成误差、电能表的误差、电压互感器二次导线压降所引起的计量组成。
There exits a compound error problem in the electrical measurement, which is composed of PT synthetic error, ct synthetic error, electrical energy measurement error and secondary potential of PT.
表中双接点连接导线为：接点2为下限设定点，接点1为上限；设定点，接点3为公共端。
Leads of single double contacts: lower limits is contact 2, upper limits setpoint is contact 1, contact 3 is public port.
然而，在检查全轴向跳动时，百分表的位置是沿着垂直于基准轴线A的（直）引导线（见18.7.8.3）。
However, during checking of the total axial run-out. deviation, the positions of the dial indicator are along a guiding (straight) line perpendicular to the datum axis A (see 18.7.8.3).
然而，在检查全轴向跳动时，百分表的位置是沿着垂直于基准轴线A的（直）引导线（见18.7.8.3）。
However, during checking of the total axial run-out. deviation, the positions of the dial indicator are along a guiding (straight) line perpendicular to the datum axis A (see 18.7.8.3).
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