About Ren Jianwei
About 中鉄十七局集団有限公司勘察設計院 山西太原 030032
About Tiedao Jianzhujishu
About particle size(diameter)
About software
About construction period
About retaining wall
About concrete
About stratum
About structural design
About mudstone
About geology(geological feature)
About river
About foundation work
About steel
About reinforcing steel
About deep water
About river bed
About Substructure
About Girder,truss,arch bridges
About Structures using other structural materials
About 深水
About 基礎
About コンクリート
About 周辺
About 堰
About 設計
About 施工