Phosphate rock is one of the four most important basic chemical commodities.

磷酸盐类的岩石是四种最重要的基本化学商品之一。

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Shear failure is a basic failure mode of borehole rock.

井眼剪切破坏是井眼岩石基本破坏形式之一。

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Firstly, the basic rule of seepage in fissured rock mass and the mechanism of the effect are studied.

首先分析了裂隙岩体渗流运动的基本规律，研究了应力对渗流作用影响的机理。

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Not content with the basic black concert T shirt, the Stones are moving into upscale souvenirs--Rolling Stones Rock wear--to be sold at the concert sites when possible, but also in retail outlets like Macy's, J.

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