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主动红外探测器
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主动红外探测器
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active infrared detector
主动红外探测器
红外线光束遮挡型探测器,当发射机与接收机之间的红外光束被完全遮断或部分遮断时,将产生报警信号。俗称对射式红外探测器、主动红外对射。
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plane algebraic element
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