cationic head

例句：

1. 1. The cationic surfactants are commonly used in cleaning agents.
   阳离子表面活性剂常用于清洁剂中。
2. 2.The cationic polymers have been found to be effective in treating skin diseases.
   阳离子聚合物被发现在治疗皮肤病方面是有效的。
3. 3. In this study, we investigated the effects of cationic surfactants on bacterial growth.
   在这项研究中，我们研究了阳离子表面活性剂对细菌生长的影响。