The rock slope of open'pit is substantially a part of mountain-body, and is semi-infinite medium which consists of the same material as the ground.
露天矿岩质边坡实质上是山体的一部分，是和大地同一材料构成的半无限体。
The rock slope of open'pit is substantially a part of mountain-body, and is semi-infinite medium which consists of the same material as the ground.
露天矿岩质边坡实质上是山体的一部分，是和大地同一材料构成的半无限体。
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