This pore space is known as porosity and is expressed as a percentage of the total rock volume.

这个孔隙空间被称为孔隙度，用岩石总体积的百分比表示。

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With countless holes diatomite and complex hole, its pore rate for 80-90%, this is the intercept solid particles provide larger space.

硅藻土具有无数的小孔和复孔，其孔隙率为80-90%，这就为截留固体颗粒提供了较大的空间。

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The porosity increasing is primarily due to the resolution of carbonate so that a large amount of the secondary pore space is resulted.

而碳酸盐的溶解作用形成了大量次生孔隙空间，增加了砂岩的孔隙度。

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Since all the pore space is filled, pressure builds until the ice turns to liquid.

BBC: Doubts over water on Mars

The researchers believe that as the cold wave moves from the surface, the rock pore space is completely filled in.

BBC: Doubts over water on Mars