| 单词 | vacuum tube |
| 释义 | vacuum tube From Longman Dictionary of Contemporary EnglishElectricalvacuum tubeˈvacuum ˌtube noun [countable] American EnglishTEEa valve(3)Examples from the Corpusvacuum tube• Just 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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