基本解释阳离子同根派生 Cations相关词英汉例句Hardness is caused by divalent metallic cations.硬度是由一些两价金属阳离子引起的。One means of accomplishing this end is to add trivalent cations to the water.实现这一目的的一种方法是将三价阳离子加入水中。Cations更多例句