欧姆计使用内部的电流源和静电计电压表来进行测量。
The ohmmeter USES an internal current source and electrometer voltmeter to make the measurement.
因此谨慎的做法是定期地用静电计欧姆计来测量测试夹具和电缆的绝缘电阻，以保证其完整性。
Therefore, it's prudent to measure the insulation resistance of the test fixtures and cables periodically with an electrometer ohmmeter to ensure their integrity.
图1 - 18示出另一种形式的静电计欧姆计的基本电路结构。
Figure 1-18 shows the basic configuration of an alternative form of electrometer ohmmeter.
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