emergency ventilation system meaning in English

事故通风系统

With an introduction of the model test on the nozzle - equipped emergency ventilation system for subway tunnel , this paper discusses the test system design in detail and the process of making the test program
摘要介绍了配置喷口的地铁区间隧道事故通风系统模型试验方案，详细说明了该试验系统的设计，试验方案的制订。
Through tests of different nozzle - equipped emergency ventilation systems , the authors hold that , under the same condition of air volume and air pressure , the round mouth nozzle and its parameters is the best , thus provides reference for the design of emergency ventilation system
对不同类型喷口的通风系统性能进行了试验，提出在相同的风量和风压下，椭圆喷口的通风功能和防灾能力最强，喷口出口风速提高有利于提高其风量效率等结论，为隧道事故通风系统提供了设计依据。