The low resistant erosion ability of ground substance, especially in granite weathering crust and purple rock and its soil are the inner causes of severe soil erosion.
英
美
释义
抗侵蚀性较弱的地面组成物质,特别是花岗岩和紫色岩风化壳及其土壤,是造成土壤侵蚀特别严重的内在原因;
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