The lack of humus and the excessive leaching make this soil almost useless for agricultural purpose.缺少腐殖质和过度淋滤使这种土壤对农业几乎无用.The deep oxidation and groundwater leaching solubilizes much of the loosely bound uranium.深部氧化和地下...
Leaching of copper from chalcocite with acidic acetonitrilecopper sulphate system was studied.研究了用酸性乙腈硫酸铜体系从辉铜矿中提取铜.The deep oxidation and groundwater leaching solubilizes much of the loosely bound uranium.深部氧化和地下水淋蚀使大部分...