如果屏蔽和测量仪器之间存在一个交流电势差，则可能有电容性电流通过测量电路，增大干扰。
If there is an ac potential difference between the shield and the measuring instrument, there may be capacitive currents flowing through the measuring circuit that will add interference.
ZL5型智能lcr测量仪是具有标准IEEE - 488接口的电感、电容和电阻测量仪器。
ZL5-type intelligent LCR Measure instrument is an intelligent instrument measuring inductance, capacitance and resistance with IEEE-488 interface.
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