英语词汇“vacuum tube”的读音、翻译、释义、用法及例句-范文网

词汇	vacuum tube
释义	vacuum tube〔美国〕＝ vacuum valve.vacuum: n. (pl. vacuums, vac-ua ) 1. ...tube: n. 1.管，筒；颜料管。 2.管状地下隧道；〔口语〕( ...
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