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

单词	vacuum tube
释义	vacuum tube noun A sealed glass tube containing a near-vacuum which allows the free passage of electric current.A photocell is usually a vacuum tube with two electrodes.... In 1948 the vacuum tube was replaced by longer-lived solid-state transistors, marking the dawn of microelectronics. We think of the 1950s as the golden era of the vacuum tube.
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