This paper is mainly about some researches on super-fine cement grout's dispersion and reinforcement rules in sandy soil.

文章主要研究了超细水泥在砂土层中的注浆扩散机理，以及超细水泥浆液注浆法对砂土层加固机理与加固效果。

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Soil erosion caused by rain and the layer flow of slope land is thinked as simultaneous occurrence process of slope land soil of dispersion, deposition and diversion.

由于降雨、坡面层流引起的土壤侵蚀被认为是涉及到坡面土壤的分散、沉积和转移同时发生的过程。

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According the soil water flow condition, four formulas for calculating the Parameters of dispersion have been acheived.

对四种不同水流及初始盐分浓度条件下的弥散系数计算给出了具体公式和试验方法。

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These problems include the destruction of wetlands and mangroves, the dispersion of chemicals and nutrients, and the salinisation of the soil.

ECONOMIST: Fish farming