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。
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。
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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