ion exchange agent的用法和樣例：
例句
- Any ion electrostatically bound to the exchanger is referred to as counterion.
靠靜電引力結合在交換劑上的離子，叫做平衡離子。 - A new method of producing comparatively pure potassium sulphate from seawater using inartificial zeolite as the medium of ion exchange was especially introduced.
特別介紹了用天然沸石作為離子交換劑，從海水中制備較純凈的硫酸鉀新工藝。
