power frequency voltage withstanding characteristics
power frequency voltage withstanding characteristics
工频耐压特性
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The test results show that the power frequency voltage withstanding characteristics of the insulation of protective relays are the key factor influencing tolerable ground potential rise.
结果表明，继电器绝缘的工频耐压特性是影响这一数值的关键因素。
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