surface collapse 地面塌陷 ; 地表塌陷
karst surface collapse 岩溶地面塌陷
delayed surface collapse 迟后性地面塌陷
continual surface collapse 地面塌陷
compound karst surface collapse 复合型岩溶地面塌陷
Autumn snows have probably already dusted the surface of the melange of ice; snowfall and seasonal sea ice kept much of the debris frozen in place the first winter after the collapse.
秋天的降雪可能已经覆盖了冰层表面的杂质；在崩塌发生后的第一个冬季，降雪和季节性海冰把大部分杂质封冻在当地。
No joint surface collapse was found.
关节面未见明显塌陷情况。
In time and space, the whole process of karst collapse can be divided into two phases: inter collapse and surface collapse in term of the formation of the critical soil hole.
以临界土洞为界，岩溶塌陷的整个发育形成过程从时间和空间上划分为内部塌陷和地表塌陷两个密不可分的阶段。
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