The phenomenon of wind erosion and desertification is widespread in mountain area of hebei province and it plays an important role in sand-dust storm in2000.

风蚀沙化现象在河北山区普遍存在，在2000年的沙尘暴中扮演了重要的角色。

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The paper introduces technical flow of making brick from soot dust. This is the most widespread application of soot dust in construction industry.

本文介绍粉煤灰在建筑行业中最广泛的应用——制砖的工艺流程及性能。

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Personal protection and labor protection education should be widespread in order to control the damages of concrete dust on workers.

加强个人防护及劳动保护知识教育，以综合措施控制水泥粉尘对从业人员的危害。

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One theory is that a growing mass of particulates, such as coal dust and biomass (from the widespread use of cow dung as fuel, for instance) in the air above India, now hinders rainfall.

ECONOMIST: India��s climate: Monsoon, or later | The