英语词汇“vacuum tube”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	vacuum tube
释义	vacuum tubeˈvacuum ˌtube noun [countable] science, physics a closed glass tube, used to control the flow of electricity in old radios, televisions, etc.
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