Conclusion: Silica gel column chromatography and crystallization are simple and rapid Methods: To isolate gardenoside.结论: 柱层析和重结晶方法是简单、速分离栀子苷的有效办法.This paper advances the preparation method of erucamide by direct ammonol...
For protein crystallization, the main impact of precipitant is on the solvent.对于蛋白质的结晶，沉淀剂主要在溶剂上产生作用。Liquids may not be too viscous or be susceptible to crystallization.液体不能太粘稠，也不能易结晶。The wires usually have a tendency to...
Whether to stay in the federated state or become independent is a decision that has to be made by the people.是继续留在联邦制国家内还是独立必须由人民决定。All these research prove that the Fast Federated Filtering is effective.这些研究表明快速联邦滤波算法是有...
过去10年中，少女怀孕的现象不断增多。Teenage conceptions have risen steadily in the last ten years.她隐瞒了自己怀孕的事，直到孩子出世。She concealed her pregnancy right up to the moment of birth.领养小孩后怀孕的妇女比比皆是。The number of women who become pregnant after ...