anionn.阴离子；负离子anion surfactant[化] 阴离子型表面活性剂anion flocculant阴离子絮凝剂anionic polymers阴离子聚合物anionic compound阴离子化合物anion test paper负离子试纸anionic grafting负离子接枝anion adsorptionn.阴离子吸附anionie cleavage负离子裂解anionic emulsion阴离子乳液anion exchangers阳离子型吸附剂