anions阴离子anionn.阴离子；负离子anion-cation balance阴阳离子平衡anion-exchange agent阴离子交换剂anionic polyacrylamide阴离子型聚丙烯酰胺anionic wetting agents阴离子湿润剂anion exchange protein阴离子交换蛋白anionic trash catchers阴离子垃圾捕捉剂anion-exchange fibre阴离子交换纤维anionic polysaccharide阴离子多糖Anion-exchange fiber阴离子交换纤维anionoid recombination阴离子催化聚合