此影片让你用一种溶剂与两种溶剂的再结晶方法从溶解度测试到冷过滤来经验此过程。
This video walks you through the procedure, from solubility tests to cold filtration, with information on one-solvent and two-solvent recrystallizations.
采用冷芯盒法制芯时，粘结剂中的溶剂含量对砂芯强度有较大影响。
In core making with cold core box, the solvent content in the binding material has a greater influence on the sand core strength.
采用“固定冷浴温度、局部过冷、密封样品管、机械搅拌”的方法进行溶剂或溶液凝固点测量，与传统方法相比，它具有操作简单、结果准确、重现性好的优点。
In this paper, a method of determination of the freezing point with "a ice water bath of lower and unchanged temperature, lower cold in part, airtight tube, stirring with a machinery" is reported.
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