cationicadj.阳离子的cationn.阳离子cation-exchange paper阳离子交换纸cationic tertiary amine阳离子叔胺cationic rosin emulsion阳离子分散松香施胶剂cation exchange reactor阳离子交换器cationic microparticles阳离子微粒Cationical modification阳离子化cation-polyacrylamide阳离子型聚丙烯酰胺cationic polymerization阳离子催化聚合作用cationic colloidal gold阳离子胶体金cationic organic polymer阳离子有机高分子聚合物