两性型界面活性剂 Ampholytic surfactants
两型性 [动] dimegaly
两性离子型 Zwitterionic ; ACPAM
两性离子型聚丙烯酰胺 ZPAM
两性离子型瓜尔胶 zwitterionic guar gum
季铵型两性pam quaternary ammonium amphoteric polyacrylamide
先天性两叶型主动脉瓣 congenitally bicuspid aortic valve
本文综述了氨基酸型两性表面活性剂应用于皮革中的研究动向，并重点介绍了其分类及合成方法。
In this paper, the classification and synthesis methods of amino-acid type amphoteric surfactant, and the progress of its application in leather industry were introduced.
通过有机合成反应，在实验室制得符合条件的两性离子型表面活性剂。
A qualified amphoteric ionic surface active agent is achieved in a lab through an organic synthetic reaction.
指出两性表面活性剂的毒性与非离子表面活性剂一样比离子型表面活性剂的低，甚至比乙醇的还要低。
It was denoted that the toxicity of amphoteric surfactants is same as that of nonionic surfactants, which is lower than that of ionic surfactants and even lower than the toxicity of ethanol.
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