1. The strata movement and the ground surface subsidence caused by underground mining are serious underground engineering problems. 地下开采引起的岩层移动和地表沉陷是一个非常严重的地下工程问题。
2. The laws of ground surface subsidence and rock mass movement in east area of Chenchao iron mine due to underground mining are studied. 以大量的现场实测资料为基础，分析了程潮铁矿东区地下采矿引起的地表沉降和岩层移动规律。
3. The aim of this study was to experiment on bovine to find the minimum subsidence of these designs and relationship between bone mineral density (BMD) and subsidence. 本研究的目的是用牛脊椎
英英解释
n.
1. an abatement in intensity or degree (as in the manifestations of a disease)
2. a gradual sinking to a lower level
3. the sudden collapse of something into a hollow beneath it
