设计地震区的高层建筑时，选择结构的适宜自振周期是十分重要的。

It is important to select reasonable natural period of high-rise building in seismic design.

youdao

设计地震区的高层建筑时，选择结构的适宜自振周期是十分重要的。

It is important to select reasonable natural period of high-rise building in seismic design.

youdao