... 保护中性线(PEN) Combined protective and neutral conductor 预期接触电压 Propective touch voltage 风险等级 Level of risk ...
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prospective touch voltage
... 预期接触电压 prospective touch voltage 约定接触电压限值 conventional prospective touchvoltage limit 直接接触 direct contact ...
基于2个网页-相关网页
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