We must find economical methods for extracting oil from shale.

我们必须找到从页岩中采油的经济方法.

《现代汉英综合大词典》

We can extract oil from shale.

我们可以从页岩中提取石油.

《简明英汉词典》

The limestone, sandstone and shale of this area were soft.

这个地区的灰岩 、 砂岩和页岩都是很柔软的.

辞典例句

Thin layers of sandy shale, and carbonaceous fragments are locally present.

局部出现砂质页岩薄层和碳质碎屑.

辞典例句

The sandstone and shale units are of the same age.

砂岩和页岩单元是同时的.

辞典例句

Sandstones are, as a rule , interbedded with shales.

砂岩通常都与页岩互层.

辞典例句

Oil - yielding organic matter is contained in the shales.

在这些页岩里有产油的有机物质.

辞典例句

Alternating sandstones and shales are regarded as important.

蚀变的砂岩和页岩是很重要的.

辞典例句

Thus clays and shales tend to be impermeable.

因此粘土和页岩就往往不透水.

辞典例句

The shale beds in between generally deform plastically.

夹在其中的页岩层通常是塑性变形.

辞典例句

Uranium is frequently enriched by sorption or chemical combination in shales, lignites and phosphorites.

铀经常为页岩, 泥炭和磷块岩所吸附或化学结合态而富集.

辞典例句

The thermal dissociation of the potassium shale - potash system has been experimentally investigated.

通过实验探讨了富钾页岩+碳酸钾体系热分解反应过程.

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Most of the rock in this mountain is shale.

这座山上大部分的岩石都是页岩.

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Any of various dark gray sandstones that contain shale.

杂砂岩任何含有页岩的多种黑灰色砂岩之一.

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The Nonesuch could be considered the oldest actively expelling oil source bed.

农萨奇页岩可能是最古老的还在排油的烃源岩.

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