英语词汇“photoelectric intrusion detector”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	photoelectric intrusion detector
释义	photoelectric intrusion detector photoelectric intrusion detector [¦fōd·ō·i′lek·trik in′trü·zhən di‚tek·tər] (electronics) A burglar-alarm system in which interruption of a light beam by an intruder reduces the illumination on a phototube and thereby closes an alarm circuit.
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