ground depression

基本解释

Surface subsidence (ground depression) caused by the overuse of ground water.
过度抽取地下水引起的地面沉降。
The depression of the ground are covered with black and fertile soil, where the vegetation is vigorous .
凹地上覆盖着一层肥沃的黑土，植物长得茂盛。
translation-dictionary.net
This paper aims at the study of 3D numerical simulation of the groundwater flow field of the Changzhou-Wujin district, for revealing the main cause of the depression of the ground surface.
通过研究常州-武进地区地下水流场的3维数值模拟，揭示了该地区产生地面沉降的主要成因。

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