abutment of arch拱座
abutment of arch dam拱坝坝肩
gravity abutment of arch dam拱坝重力墩
abutment block of arch dam拱坝重力墩
Abutment Stability of Arch Dam坝肩稳定
arch abutment拱台;圆拱墩柱;拱端;拱形桥台
stability of arch abutment拱座稳定
arch abutment stability拱座稳定
arch abutment forces拱端力