英语词汇“photoelectric 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	photoelectric relay
释义	photoelectric relay photoelectric relay [¦fōd·ō·i′lek·trik ′rē‚lā] (electronics) A relay combined with a phototube and amplifier, arranged so changes in incident light on the phototube make the relay contacts open or close. Also known as light relay.
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