District Fire protection water supply 区域消防给水系统 Fire protection water supply systems 消防给水系统 Fire protection water supply systems of temporaryhigh pressure 临时高压消防给水系统 ..
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A Double Check Detector Assembly shall be installed on fire protection systems when connected to a potable water supply.
这种双止回阀检测总成应该安装在与饮用水管道连接的消防系统上。
Double Check Detector Assembly shall be installed on fire protection systems when connected to a potable water supply.
这种双止回阀检测总成应该安装在与饮用水管道连接的消防系统上。
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