1. The result of the test indicated that the aluminium sulfate and the sodium tartrate potassium bond was advantageous to prepare the short columnar alpha-hemihydrated gypsum crystal.
   试验结果表明,添加硫酸铝与酒石酸钠钾复合转晶剂,对制备短柱状α型半水石膏晶体有利;

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