英语词汇“vacuum tube with means for concentration of electron stream”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典-罗兹网

单词

vacuum tube with means for concentration of electron stream

释义

vacuum tube with means for concentration of electron stream

[电学] 有集中电子流设施的真空电子管

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