Cations阳离子cationn.阳离子cation-exchanger阳离子交换剂cationic emulsions阳离子乳液cationoid reaction阳离子反应cationic liposomes阳离子脂质体cationicsurfactants阳离子表面活性剂CTABcationic humic acid阳离子生物质cationic brightener阳离子增白剂cationic surfaetant阳离子表面活性剂cationic heteroatom阳异原子cationized ferritin阳离子化铁蛋白