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[求助] 絮凝剂PAC中Al2O3的质量分数怎么计算的?

文献中经常这样的叙述;
PAC(市售,Al2O3的质量分数为28%,盐基度为65%),
请问这个质量分数怎么算的?盐基度怎么算的?
计算公式是什么?
需要什么参数?

[ Last edited by chuhua on 2007-11-5 at 17:29 ]
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