水管系统、私人消防管系统及哈龙灭火系统安装标准。

Standard for the Installation of Standpipe, Private Hydrants, and Hose Systems.

youdao

水管系统、私人消防管系统及哈龙灭火系统安装标准。

Standard for the Installation of Standpipe, Private Hydrants, and Hose Systems.

youdao