求翻译：本论文在综合国内外大量相关文献的基础上，选取重金属Cr、Cu、Zn及腐殖酸、高岭土为研究对象，通过研究金属离子与腐殖酸的吸附行为、络合常数和作用机制，明确了重金属在不同形态间的转化过程；探究了腐植酸在水中的两种存在形式和高岭土相结合的差异性，确定了基本反应单元；深入研究了水溶态腐殖酸对高岭土吸附重金属的影响作用，并对作用机理进行了分析。是什么意思？

The large number of papers in the literature at home and abroad on the basis of selected heavy metals Cr, Cu, Zn, and humic acid, kaolin for the study, through the study of metal ions with humic acid adsorption, complexation constants and mechanisms of action, clear between different forms of heavy

Paper presented at the comprehensive analysis of both domestic and international large amount of related literature selected based on heavy metals, Cu Cr Zn , and humic acid, kaolin as the object of study, through a study of metal ion and humic acid adsorption behavior, contact the cosmological cons

This papers in integrated at home and abroad large related literature of Foundation Shang, select heavy metal Cr, and Cu, and Zn and the humic acid, and kaolin for research object, through research metal ion and humic acid of adsorption behavior, and complex-in constants and role mechanism, clear ha