您要查找的是不是：
- PVC管急流槽PVC pipe chute
- PVC管急流槽在公路排水中的应用The Application of the PVC Pipe Chute in the Highway Drainage
- 公路急流槽管的典型结构Typical Structure of Torrent Ditch or Conduit Used in Highway Drainage
- 管pipe
- PVC管PVC pipe
- 槽manger
- U-PVC管U-PVC pipe
- 插槽slot
- 管的vasal
- 急流torrent
- 网管network management
- 槽的groovy
- PVC管件PVC pipe
- 滑槽runner
- 管路pipeline
- 槽口rabbet
- 品管QA
- 槽车tank car
- 高管senior executive
- 弯管syphon
