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干式系统 :工作状态时报警阀后配水管道内充满用于启动系统的有压气体的闭式自动喷水灭火系统。干湿交替系统 :冬季为干式状态 ;而非冻期转为湿式状态的闭式自动喷水灭火系统。预作用系统 :在准工作状态时 ,报警阀后管道不充水 ,配套的火灾报警系统自动连锁或远控、手动启动预
Dry system: working state after the alarm valve is filled with water for starting the system pressurized gas closed sprinkler system. Wet-dry alternation system: winter is dry state; instead of non-frozen period to wet state closed sprinkler system. Pre-action system: In the quasi-working state, the alarm valve after the pipeline is not filled with water, supporting the automatic fire alarm system chain or remote control, manual start pre