英语词汇“cathode ray”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	cathode ray
释义	cathode ray n. 1. An electron emitted from the cathode of an electrical discharge tube, such as a cathode-ray tube. 2. A narrow beam of such electrons.
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