英语词汇“phototube relay”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	phototube relay
释义	phototube relay phototube relay [′fōd·ō‚tüb ′rē‚lā] (electronics) A photoelectric relay in which a phototube serves as the light-sensitive device.
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