amphoteric ion exchange resin

例句：

1. 1. The ion exchange resin is amphoteric, meaning it can exchange positively or negatively with different types of ions.
   离子交换树脂是两性的，意味着它可以与不同类型的离子进行正负交换。
2. 2. This type of resin is commonly used in the treatment of acidic and basic wastewaters.
   这种树脂通常用于酸性和碱性废水的处理。
3. 3. The amphoteric nature of the resin allows it to selectively bind to certain ions, making it auseful tool for water purification.
   这种树脂的两性性质使其能够选择性地结合某些离子，使其成为水处理的一种有用工具。