... emergency ventilation 紧急备用通风，事故通风，应急通风 emergency ventilation system 事故通风系统 emerging 现出，涌出 ...
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简述了地下铁道防排烟系统的组成及其运行方式，包括车站及区间隧道火灾事故通风系统，火灾报警与设备监控系统。
Describes the composition and running modes of the smoke control and exhaust system, including the fire ventilation system at stations and in the tunnel, and the fire alarm and device control system.
根据调查显示，大部分的煤矿事故都与矿井通风系统不完善有直接的关系。
According to a survey, most of the coalmine accidents are caused by imperfect mine ventilation.
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