underground railway tunnel

基本解释

Numerical simulation and analysis of smoke characteristics and critical velocity in underground railway tunnel while fire;
在分析了地铁站台火灾时烟气流场变化规律的基础上，提出了临界通风速度的概念。
The lights could be used in many places such as: the tunnel, underground passage, underground parking, railway, building lighting, large area flood lighting, public spaces, squares and other places.
适用于隧道，地下通道，地下停车场，铁路，楼宇亮化，大面积泛光照明，公共场所，广场等需要的照明场所。
Construction of various urban underground engineering, deep-buried tube work, large span highway (railway) tunnel are greatly improving tunnel construction technology.
一系列的城市地下工程、深埋管道工程、大跨度公（铁）路隧道的修建，大大促进了隧道施工技术的进步。