If no drainagesystem exists, the water table rises, bringing dissolved salts to the surface.
如果没有排水系统,地下水位就会上升,把溶解的盐带到地表。
2
The urban rainfall runoff pollution originates from the precipitation, the urban surface and the drainagesystem.
城市降水径流污染中的污染物主要来自降水、城市地表和排水系统。
3
The drainage design of urban highway deals with only the surface run-off. It presents a new drainagesystem considering the road surface, pavement structure, and subgrade (including green belt).