Although the hot rock of the mantle is a solid, under the tremendous pressure of the crust and overlying rock of the mantle, it flows like a viscous liquid.

虽然地幔的热岩石是固体，但在地壳和地幔上覆岩石的巨大压力下，它像粘性液体一样流动。

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It is a key for mine safe production to ensure the stability of overlying rock strata in stope.

确保采场上覆岩层稳定是矿井安全生产的关键。

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The pressure of the weight of overburden, or overlying rock, on a formation; also called geostatic pressure.

上覆层或上覆岩石的重量对地层的压力，也称为地静压力。

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So by firing radio pulses through the overlying sheet and recording the return echoes, scientists can plot both the depth of the rock bed and - by definition - the thickness of the ice covering.

BBC: Antarctic ice volume measured