这种药用盐已经经过了专门提纯处理。
试验首先对三种膨润土试样进行了分散提纯处理。
The three samples are dealt with the purification and dispersion.
采用水悬浮法对蒙脱石原土进行钠离子交换反应和提纯处理得到纯度较高的钠型蒙脱石。
An Na-montmorillonite with high purity was obtained by the water suspension method using the ion exchange reaction and suspension purification treatment.
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