girdern.[建]大梁
girder bridge structure桥梁结构
girderless follow floor无梁空心楼盖
girderless floor system无梁楼盖系统
girder-transfer story梁式转换层
girder-pier stiffness梁墩刚度
Girder transport vehicle运梁车
girder-staff structure梁杆结构
girder truss construction施工
girder-arch combination梁拱组合
girder casting technology制梁工艺