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单词
safety extra-low voltage, SELV
释义
safety extra-low voltage, SELV
安全[特低]电压; 为防止触电事故而采用的由特定电源供电的电压系列。在任何情况下,在两导 体之间或任一导体与地之间这个电压系列的上限值均不得超过有效值50V (交 流50-500Hz)。
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has the best
has the best of
Has the cat got your tongue?
has the cat got your tongue
has the courage of opinions
has the making of
has the name of
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hastie
hastier
Hastiere
hasties
hastiest
Hastie, William Henry
hastif
hastifly
hastifnesse
hastifoliate
hastifolius
hastiform
hastihede
hastile
hastilow
hastilows
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更新时间:2026/10/18 12:49:17