ground depression

基本解释

Surface subsidence (ground depression) caused by the overuse of ground water.
過度抽取地下水引起的地麪沉降。
The depression of the ground are covered with black and fertile soil, where the vegetation is vigorous .
凹地上覆蓋著一層肥沃的黑土，植物長得茂盛。
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.
通過研究常州-武進地區地下水流場的3維數值模擬，揭示了該地區産生地麪沉降的主要成因。

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