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        接近開關概述

           接近開關是一種毋需與運動部件進行機械接觸而可以操作的位置開關,當物體接近開關的感應面到動作距離時,不需要機械接觸及施加任何壓力即可使開關動作,從而驅動交流或直流電器或給計算機裝置提供控制指令。接近開關是種開關型傳感器(即無無觸點開關),接近開關即有行程開關、微動開關的特性,同時擁有傳感性能,且動作可靠,性能穩定,頻率響應快,應用壽命長,抗干擾能力強等、并擁有防水、防震、耐腐蝕等特點。產品有電感式、電容式、霍爾式、交、直流型。
        欧美大胸r级剧情,与老妇岳性疯狂刺激小说,国产haodiaose最新

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