In the emergencies of releasing toxic gas in public places, emergency ventilation system plays an important role for ensuring indoor occupants' safety.

在公共场所释放有毒气体的突发事件中，应急通风系统对于保证室内人员的安全起着至关重要的作用。

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To guide the design and operation of emergency ventilation system, intensive study on several key issues of emergency ventilation theory has conducted.

为了指导应急通风系统的设计与运行，本文针对应急通风理论中的若干关键问题进行了较为深入的研究。

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The paper presents the methods and researching condition of tunnel fire, the characteristic of emergency ventilation, and the system of rescuing and putting out fire in tunnels.

论文介绍了隧道火灾的研究方法及现状，火灾事故应急通风的特点，以及隧道火灾通风灭火救援体系。

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