structural strength短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 结构强度 The tower's structural strength came largely from the244 steel girders that formed the perimeter of each floor and bore most of the weight of all the floors above. 这座塔的承重主要来自于244根钢梁，这些钢梁搭成了每一层楼，承担着该层上面的全部重量。 yeeyan