underground slot-net drainage 网络盲沟排水
Three-D Drainage Net 三维排水网
drainage net 河网 ; 排水网
stray current drainage net 排流网
old drainage pipe net 旧排水管网
Three-D Drainage Net Product Line 三维排水网生产线
The two techniques, non-excavation recovery technique and endoscope detection technique of drainage pipe net were put forward.
阐述了排水管网的非开挖修复技术及排水管道内窥检测技术。
The detection technique could resolve the potential problems of civil roads and could apply advanced technology supplement for managing drainage pipe net.
通过排水管网内窥检测技术可以很好地解决城市道路的隐患，为科学管理排水管网提供了先进的技术支持。
A net-shaped small hole is arranged on the seepage plate, and a longitudinal drainage groove and a groove which is vertically communicated with the drainage groove are arranged on the guided plate.
渗水板上设置 有网状小孔，疏导板上设置有纵向的排水凹槽和与排水凹槽相垂直的连通凹槽。
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