英语词汇“ultravacuum”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	ultravacuum
释义	ultravacuum (ˌʌltrəˈvækjʊm, ˌʌltrəˈvækjʊəm) noun physics 1. an extremely high level of vacuum 2. a machine or device for creating such a vacuum
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