Cyclization occurs readily with dilute alkali.遇到稀碱就容易环化.Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation.以柠檬桉叶油为主要原料经环化、催化氢化二步反应得到薄荷醇.METHODS Cilnidipine was synthesized from cin...
Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.综述了二碘化钐在分子内环化反应中的应用.Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studie...
母亲放下一切别的事情,先去抚慰哭叫着的孩子.The mother postponed all other business to the task of smoothing her crying child.他几乎要哭叫起来, 就象是祈求免罚的祷词,要夺口而出了.A cry sprang to his lips, a prayer to be let off.她把那个哭叫的小孩子拖走了.She carried off the screa...
When food is swallowed, it passed through the pharynx and in the esophagus.食物被咽下, 经过咽进入食道.The accumulation of unswallowed saliva in the pharynx causes the sensation of choking.不能咽下的唾液积聚在咽部引起窒息感.Every turn to weather now ...
Set to work with a will and be pleased with the amount you get done.干活时卖力干，干了多少都满意。He had reason to be pleased with himself, since he was one of only seven out of forty candidates who were successful.他有理由沾沾自喜，因为他是40个候选人里...