As to the profile shapes of ground collapse, they are approximately divided into vertical shaft, butterfly, funnel, ampulliform in shapes and so on.
剖面形态大致可分为竖井状、蝶状、漏斗状及坛状等。
As to the profile shapes of ground collapse, they are approximately divided into vertical shaft, butterfly, funnel, ampulliform in shapes and so on.
剖面形态大致可分为竖井状、蝶状、漏斗状及坛状等。
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