Isomerization occur during bromine reaction, that is mean secondary allylic configuration changes into primary allylic configuration.在溴化反应过程中存在分子结构重排, 即溴代仲位烯丙基构型向溴代伯位烯丙基构型发生转化....
He closed down the business and went into politics.他关闭公司投身政治。It'd be better for a place like this to remain closed.像这种地方最好一直关闭。He closed his door and started the quarter-mile walk down the hill.他关上门,踏上了1/4英里长的下山路....
The Convention of Peking in 1860 , which ended the hostilities, provided for its outright cession.一八六零年, 战争结束, 订立《北京条约》,九龙半岛正式割让予英国.Third - party states have no title to object to cession.第三国无权反对割让.The cession of the ter...
他们将在地中海上巡游.They will go cruising in the Mediterranean.巡游控制开关按常规安装在转向杆上.The cruise control switches are conventionally mounted on the steering colum.巡游控制开关按常规安装在转向轩上.The cruise control switches are conventionally mounted ...