采用分段制作、高空拼装的方法安装钢柱和钢屋架。

Steel column and roof frame are made in multisections and assembled at high altitude.

youdao

采用分段制作、高空拼装的方法安装钢柱和钢屋架。

Steel column and roof frame are made in multisections and assembled at high altitude.

youdao