坳陷泛指地壳上不同成因的下降构造。这一术语无尺度大小和形态的限制，如盆地、坳槽、地堑、裂谷等。而这种下降可以直接起因于垂向地壳运动，也可以由侧向挤压或伸展所导生。
n. depression
... depression area 沉降区 depression basin 坳陷 depression of order 降阶法 ...
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山间坳陷 intermontane depression ; intermontane deep ; interdeep
济阳坳陷 Jingyang sub-basin
川西坳陷 West Sichuan depression ; western sichuan sag
坳陷型聚煤盆地 subsiding coal accumulating basin ; coal-accumulating depression basin
环转坳陷 ring depression
大坳陷构造 mega-depression tectonics ; depression tectonics
边缘坳陷 marginal deep
坳陷带 geotectogene
绥滨坳陷是三江盆地的次一级构造单元，位于三江盆地的西部。
Suibin depression, as a secondary tectonic unit, lies in the west of Sanjiang basin.
青东凹陷是济阳坳陷的一个次级构造单元，位于渤海浅水海域。
Qingdong sag is a secondary structure unit of Jiyang depression and lies in Bohai shallow sea waters.
近几年，济阳坳陷古潜山油气藏的勘探和开发取得了突破性的进展。
In recent years, there have been great advancement on the exploration and development of buried hills in Jiyang Depression.
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