该仪器是专为简单的测量开关接触电阻，继电器，插头，连接器，或腿之间的电解铅和电极。
The instrument is specially designed for simplicity in measuring the contact resistance of switch, relay, plug, connector, or between electrolytic lead leg and electrode.
插头的带电极与任何外部金属之间，插头的所有带电极连接在一起。
Between live poles of the plug and any external metal, all live poles of the plug being connected together.
插头的带电极与任何外部金属之间，插头的所有带电极连接在一起。
Between live poles of the plug and any external metal, all live poles of the plug being connected together.
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