To reduce error due to voltmeter non-ohmic contacts, use shielding and appropriate grounding to reduce ac pickup.
为了降低电压表的非欧姆接触所产生的误差，采用屏蔽和适当的接地措施来降低交流干扰。
If using a separate current source and voltmeter to make low resistance measurements, each instrument must be checked for non-ohmic contacts.
如果使用分离的电流源和电压表来进行低电阻测量，则必须检查每台仪器的非欧姆接触情况。
If using a separate current source and voltmeter to make low resistance measurements, each instrument must be checked for non-ohmic contacts.
如果使用分离的电流源和电压表来进行低电阻测量，则必须检查每台仪器的非欧姆接触情况。
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