英语词汇“mercury-contact switch”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	mercury-contact switch
释义	DictionarySeemercury switch mercury-contact switch mercury-contact switch A wall-mounted switch used in interior electric wiring; contains a sealed glass tube of mercury which provides a silent contact when the switch is turned on.
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