英语词汇“electron tube”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	electron tube
释义	electron tube n. A sealed enclosure, either highly evacuated or containing a controlled quantity of gas, in which electrons can be made sufficiently mobile to act as the principal carriers of current between at least one pair of electrodes.
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