Beam-arch association Bridges have the advantages of beam bridge and arch bridge.

梁拱组合体系桥梁兼具梁桥和拱桥的优点。

youdao

Beam-arch association Bridges have the advantages of beam bridge and arch bridge.

梁拱组合体系桥梁兼具梁桥和拱桥的优点。

youdao