通过对隧道火灾模型试验，研究隧道发生火灾时烟流性态，着重对隧道内的烟流扩散规律、烟流逆流层的长度、逆流速度、逆流层厚度进行了试验数据的分析。
This paper studies the character of smoke by fire model test in tunnel, emphasizes on the law of smoke distribution t analyses the length, velocity and thickness of refluxed zone.
研究开发一套惯性旋风体逆流式颗粒层除尘系统，介绍该系统的结构、原理、性能及主要参数。
The research developed a set of inertia tornado body to move the bed granular layer dust removal system, introduced this system structure, the principle, the performance and the main parameter.
研究开发一套惯性旋风体逆流式颗粒层除尘系统，介绍该系统的结构、原理、性能及主要参数。
The research developed a set of inertia tornado body to move the bed granular layer dust removal system, introduced this system structure, the principle, the performance and the main parameter.
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