This rigid frame bridge can form a shaped wooden beams, reinforced concrete beams or more complicated constraints.

这种刚架桥可以组成某种形状的木梁、钢筋混凝土梁或更复杂的约束。

youdao

This rigid frame bridge can form a shaped wooden beams, reinforced concrete beams or more complicated constraints.

这种刚架桥可以组成某种形状的木梁、钢筋混凝土梁或更复杂的约束。

youdao