该公式简单、实用、方便，可供设计人员结构设计时参考。

The formulas are simple and convenient, and may serve as a reference for structural design.

youdao

该公式简单、实用、方便，可供设计人员结构设计时参考。

The formulas are simple and convenient, and may serve as a reference for structural design.

youdao