大跨度连续箱型梁桥
large span continuous box beam
流线箱型桥梁断面
bridge decks with streamlined box section
水泥混凝土箱型梁桥
cement concrete box girder bridge
HM型大型磨机磁性衬板
HM magnetic liners for large grinding mills
大曲率连续钢箱梁桥
continuous steel bridge with large curvature
大型桥机安装
large bridge crane mounting
大型特大型桥址勘察
the large and giant bridge site exploration
钢箱梁大节段施工
large segmental construction of steel box girder