This is resulting in the unnecessary specification of passive fire protection to all supporting steel beams.

因此规范中规定所有承载钢梁都要添加被动防火保护足不必要的。

youdao

This is resulting in the unnecessary specification of passive fire protection to all supporting steel beams.

因此规范中规定所有承载钢梁都要添加被动防火保护足不必要的。

youdao