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 tubeˈvacuum ˌtube noun [countable] science, physics a closed glass tube, used to control the flow of electricity in old radios, televisions, etc.
随便看	periodical periodically periodic function periodic law periodic table periodic trend period of function periodontal periodontitis period piece periosteum peripatetic peripheral peripherally peripheral nervous system peripheral vision periphery periphrasis periphrastic periscope perish perishable perishables peristalsis peritoneum

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