Chitosan, a natural macromolecule, is widely used as a kind of cationic absorbent.It has a good absorbility for anionic dyes from polluted water.是什么意思_Chitosan, a natural macromolecule, is widely used as a kind of cationic absorbent.It has a good absorbility for anionic dyes from polluted water.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句