surface water drainage 地面水排水设施 ; 地面水排水 ; 地面水排水渠
surface drainage water salt 农田排水盐分
If the water table intersect the land surface, groundwater will flow out onto the surface at springs, whether to be collected there or to subsequently flow farther along a drainage.
如果地下水位与地表相交，地下水将在泉水处流出地表，聚集于此或是随后沿着排水系统进一步流动。
If no drainage system 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。
Removal of surface water from the road or street is known as surface drainage.
从道路或街道排除表面水被称为地表排水。
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