| environ. |
water table Water that occupies pores, cavities, cracks and other spaces in the crustal rocks. It includes water precipitated from the atmosphere which has percolated through the soil, water that has risen from deep magmatic sources liberated during igneous activity and fossil water retained in sedimentary rocks since their formation. The presence of groundwater is necessary for virtually all weathering processes to operate. Phreatic water is synonymous with groundwater and is the most important source of any water supply (占据在孔隙、孔洞、裂缝和地壳岩石等空间的水。它包括从大气中沉淀下来通过土壤渗透的水，在岩浆活动期间从深岩浆源中上升所释放的水，和自形成以来保留在沉积岩的化石水。地下水的存在对于几乎所有的风化过程操作都是必要的。潜水是地下水的代名词，也是最重要的供水来源。); groundwater Water that occupies pores and crevices in rock and soil, below the surface and above a layer of impermeable material. It is free to move gravitationally, either downwards towards the impermeable layer or by following a gradient (存于岩石或土壤孔隙与裂缝中的水，位于地表下方与不透水层的上方，可以随重力往下朝不透水层或沿著水利坡降而自由移动。) |
