Sure enough, we found that in as little as two hours this process produced very high purity MgB2 in the form of a loosely sintered pellet (like sandstone).

不出所料，在短短的两个小时内，我们发现这个制程确实能制造出零散烧结状的高纯度硼化镁颗粒(看起来像砂岩)。

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If the rock is porous — has many small holes in it, like sandstone — water will sink through these holes until it reaches a layer of rock that is not porous.

如果岩石是渗水的——岩石中有许多小孔，比如沙石——水将渗透过这些小孔，直到由不渗透水的岩石构成的那个层面。

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Climbing up in the south quire to look at the traceries originally, he had found them heavily fissured, like all Durham's ancient sandstone.

爬到南唱诗班席位上去原本是去看花饰窗格，他却发现他们已经严重破裂，就像所有达勒姆古老的沙岩那样。

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These formations run in broad escarpments jutting above the landscape, creating solid walls and occasionally breaking into tall sections, like stubby sandstone fingers reaching towards the sky.

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Charming bluestone cottages and sandstone bungalows pop out of the green like tropical islands, and depending on the season you might pass magnificently vibrant flower fields in dazzling yellows, deep purples and bright reds.

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They are mostly found on sandstone and the decoration is usually of cup-like features or complex patterns of cups, rings and grooves.

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