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...
It has taken until now to pin down its exact location.直到现在才确定了它的准确位置。We should use our secondary forces to pin down several enemy columns.我们应该用助攻部队来牵制住敌人的几个纵队.He was sure he would pin down the enemy between two firing li...
The gymnast poised herself on the balance beam gracefully.体操运动员优美地立在平衡木上.The gymnast performed on the balance beam with an easy grace.体操运动员在平衡木上表演得优美自如.The gymnast poised herself on the balance beam.体操运动员在平衡木上保持平衡.a lith...
the Book of Psalms《〈圣经〉诗篇》A verse from Psalms knifed into Pug's mind: " put not your trust in princes. "《诗篇》里有一句话闪过帕格的脑海: “ 不要相信王侯. ”Psalms 19:12 Who can discern his errors? Forgive my hidden faults.诗篇19:12谁能知道自己的错失...
He was murdered at a presidential rally by gunmen in the pay of drug traffickers.他在一场总统竞选集会上被毒品贩子雇用的枪手谋杀了。Gunmen burst into his home and opened fire...持枪歹徒突然闯进他家里开枪射击。Police believe the gunmen ran off into the woods...警方...