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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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outserts
outserve
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outserving
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out set
outset angle
outset dish wheel
outsets
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outsetting
outsettlement
out-settlement
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outsettlers
outset wheel
out sex
out-shadow
outshame
out-sharpen
out-sharping
out-sheath
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更新时间:2026/4/29 3:43:28