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水在自然界的存在大致有三种形式:第一种是在海洋、湖泊、江河里。第二种是在天空中,凝结成水蒸气、云、雨、雪。第三种是天空的降水(包括雨和雪)落到地面,经过土壤或岩石的渗透而储藏到地下去了。这就是“地下水”,也称“潛水”。潛水存在地表不过2000—3300公尺,再下去就没有了。但是各地潛水的水量大小和水位高低极不一致。正如地面上的山岳、平原、丘陵、盆地一样,高低起伏。地形学上称为“地形面”,那末,潛水也一样,水文地质学上称为“地下水面”,或称“潛水面”。科学
There are roughly three forms of water in nature: the first is in the oceans, lakes, and rivers. The second is in the sky, condensed into water vapor, clouds, rain, and snow. The third type is that the precipitation (including rain and snow) of the sky falls to the ground and is stored in the earth through the penetration of soil or rock. This is “groundwater”, also known as “diving.” Diving there is only 2000-3300 meters of land surface, and then there will be no more. However, the amount of water and the water level of the local diving are extremely inconsistent. As the mountains, plains, hills, and basins on the ground rise and fall. Topographically referred to as the “topographic surface,” then diving is also the same, hydrogeology is called “groundwater surface”, or “dive surface.” science