雨水排放主渠  storm-water main drain

去水排水渠  outlet drain

雨水渠排水口  storm-water outfall

排水主管  Drain header

污水主渠  trunk sewer

主排水泵  Main drainage pump

主排水系统  main drainage system

暗渠排水  underdrainage; Conduit; Closed ditch drainage; Culvert

舱底水排水系统  bilge arrangement

城市给水排水工程  municipal water and wastewater engineering

出口排水渠  outlet drain

淡水排水量  fresh water displacement

地表排水渠  surface drainage channel

地面排水渠  floor drain; surface channel

地面水排水  surface water drainage

地下水排水  ground water drainage

地下水排水工程  groundwater drainage works

碟形排水渠  dish drainage channel

顶盖积水—排水  head cover water seepage and drainage