At present, researches on adopting micro-size materials in the flocculants field can rarely be found at home and abroad, say nothing of systematic analysis and study.

目前，国内外超细材料在絮凝剂领域中的研究很少，更缺乏系统的分析和研究。

youdao

At present, researches on adopting micro-size materials in the flocculants field can rarely be found at home and abroad, say nothing of systematic analysis and study.

目前，国内外超细材料在絮凝剂领域中的研究很少，更缺乏系统的分析和研究。

youdao