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magnetic switch detector
磁开关探测器
通过磁场来控制开关的探测器,属于点控制型入侵探测器。由开关盒和磁铁盒构成;当磁铁盒相对于开关盒移开至一定距离时,能引起开关状态变化,控制相关电路发出报警信号。又称门磁、窗磁。
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The Housing Act
The Housing, Town Planning etc., Act
The Huaihe River Waterway
The Huffington Post
the huge earthquake
the Huiyin Garden
The Human Condition
the human eye to adapt
The Human Group
the humanistic approach
The humanity paradigm in library science
The Human Place in the Cosmos
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the human settlements in Yongzhou Region
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The Hundred Languages of Children
The Hunger Games
the hungry sing of food and the labor sing of work
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The Hunting of the Snark
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The H.W. Wilson Company
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