culvert

• American and chinese engineers installed drainage culverts
  美国和中国的工程兵安装下水道。
• C modification of existing bridges , subways and box culverts
  C修建现有的桥梁，隧道与暗渠
• Code for construction on bridge culvert of railway
  铁路桥涵施工规范
• Technical specifications for construction of highway bridges and culverts
  公路桥涵施工技术规范
• Rebar fixing of extension of box culvert no . 1
  箱形排水渠的钢筋
• Code for design on subsoil and foundation of railway bridge and culvert
  铁路桥涵地基和基础设计规范
• Anteklise filling plans for bridge and culvert structures in expressway
  高速公路桥涵构造物的台背填筑方案
• Specifications for design of masonry and concrete highway bridges and culverts
  公路砖石及混凝土桥涵设计规范
• Application of beam supporting method for push launching of railway culvert
  抬梁法在铁路涵洞顶进加固中的应用
• Construction of box culvert has been completed near cheung sha
  邻近于长沙挡土墙编号36的方形去水渠工程经已完成