式(1)中，R1表示苄基或苯氧甲基。M表示一价的阳离子。
In the formula (1), R1 represents benzyl group or phenoxy methyl and m represents monovalent cation.
实现这一目的的一种方法是将三价阳离子加入水中。
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。
One means of accomplishing this end is to add trivalent cations to the water.
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