1) multi-recrystallization
复式重结晶
1.
Taking advantage of the selectively crystalline specialty of 2-amino-2-methyl-1-propanol toward isopimaric acid,butanolidine isopimarate(2-amino-2-methyl-1-propanol isopimaric acid salt) was prepared by reacting 2-amino-2-methyl-1-propanol with thermally isomerized slash pine rosin that was freshly prepared from oleoresin or rosin,then purified by multi-recrystallization.
利用异丁醇胺对异海松酸的选择性结晶特性,采用湿地松松脂蒸馏后得到的新鲜松香,或者采用工厂生产得到的湿地松松香进行热异构使大部分枞酸型树脂酸异构成为枞酸,而后将异海松酸与异丁醇胺反应形成异海松酸的异丁醇铵盐而与其他树脂酸进行分离,再利用复式重结晶法纯化异海松酸铵盐结晶,分解游离得到异海松酸,其得率达到原料松香质量分数的10。
2) combined mold
复式结晶器
1.
The effect that combined mold can increase the proportion of equiaxial crystal of billet was confirmed by comparing its heat transfer character with that of traditional mold and measuring the macrostructure of the billets produced by these two molds.
为了验证复式结晶器在提高铸坯等轴晶率方面的作用,分析比较了复式结晶器和传统结晶器的传热特征,并检测了两种结晶器所浇注铸坯的宏观组织。
2.
The temperature field of the nonmetallic material of combined mold was measured using thermocouples at different place of mold to get the heat flux distribution in mold.
为了检测结晶器的热流分布,在复式结晶器非金属材料段不同位置埋设热电偶,测定了结晶器的温度场,并在此基础上建立了描述复式结晶器内方坯凝固过程的三维数学模型。
3) mold with hybrid magnetic field
复合式结晶器
1.
The flow field in a new mold with hybrid magnetic fields with combination of alternative and static electromagnetic fields for continuous casting was simulated.
采用数值模拟方法分析了电磁连铸复合式结晶器内的流场。
4) crystal and recrystal
结晶重结晶
5) recrystallization
重结晶
1.
Solvents selection of the recrystallization for purification of diphenyl carbonate;
重结晶提纯碳酸二苯酯的溶剂选择
2.
Experimental Study on the Gradation of HNS by Recrystallization;
重结晶法级配六硝基茋(HNS)的实验研究
6) Crystallization
[英]['kristəlai'zeiʃən] [美][,krɪstḷɪ'zeʃən]
重结晶
1.
A Study on Crystallization Technology of 5 Grade RDX;
重结晶制备 5 级 RDX 工艺研究
2.
To increase the purity of bis-carboxyethylgermanium sesquioxide(Ge-132),therefining treatment of recrystallization and washing was performed besides using the agentswith higher purity.
为了提高有机锗（ＣａｒｂｏｘｙｅｔｈｙｌｇｅｒｍａｎｉｕｍＳｅｓｑｕｉｏｘｉｄｅ，Ｇｅ－１３２）的纯度，除了合成时选用较纯试剂外，还要进行重结晶、洗涤等精制处理，为验证不同精制过程对纯度的影响，用逐一定量的方法进行了对比实验。
补充资料：重结晶(重ｃｈóｎｇ)
先用溶剂(或不用溶剂)溶解(或熔解)晶体，再将晶体从溶液(或熔体)中结晶出来的一种过程。主要用以提纯物质。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条