... secondary circuit 救援回路 secondary combustible 次级燃烧 secondary combustion air 次级燃烧气氛 ...
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secondary non-combustible material 准不燃材料
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A type of combustible gas alarm device, which is controlled by single chip microcomputer, is introduced. It is made up of flameproof detector of combustible gas and secondary device.
提出了一种由单片机控制的可燃气体报警仪表，由具备防爆性能的可燃气体探测器及二次表组成。
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