Nanyi Mountain E32 gas reservoir in Qinghai is an unconventional fractured gas reservoir in Chaidamu Basin with high clay content.

青海南翼山e32气藏是柴达木盆地一非常规裂缝性气藏。

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Soils with high clay content tend to bind radioactive elements and hinder their travel, while sandy soils allow more of the radiation to pass into growing food.

粘土比例高的土壤更容易结合放射性元素，阻碍其进一步扩散，沙质土壤中的辐射物质更容易进入作物内。

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However, for some special reservoirs with high clay content and sensitivity, the final effictiveness is greatly reduced although hydraulic fracturing process can be successful.

但是，对于某些粘土含量高，敏感性强的致密油气藏，采用水力压裂技术改造尽管能获得工艺上的成功，但是最终增产效果却大打折扣。

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The reason: All four of the top American hopes possess serves and groundstrokes which are strong enough to be weapons on any surface, and the slow, high bounce on clay brings the ball into their hitting zone with sufficient time for them to set up their shots.

WSJ: Americans Produce Feats on Clay