English version

vacuum tube

From Longman Dictionary of Contemporary English
Related topics: Electrical
vacuum tubeˈvacuum ˌtube noun [countable] American English  TEEa valve(3)
Examples from the Corpus
vacuum tubeJust another snooty $ 3,000 vacuum tube amplifier, I thought.The ideal atmosphere for the vacuum tube is no atmosphere at all, or a perfect vacuum.
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