接保护地线，主要是减少试样击穿时对周围产生的较强的电磁干扰。
The protective earth wire is mainly to reduce the strong electromagnetic interference generated by the breakdown of the sample.
接保护地线，主要是减少试样击穿时对周围产生的较强的电磁干扰。
The protective earth wire is mainly to reduce the strong electromagnetic interference generated by the breakdown of the sample.
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