Mechanical exhaust system fire safety technology measures are briefly discusses in the paper.

就机械排烟系统的有关消防安全技术措施做一些简要探讨。

youdao

Mechanical exhaust system fire safety technology measures are briefly discusses in the paper.

就机械排烟系统的有关消防安全技术措施做一些简要探讨。

youdao