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....
能从其他废料中分离出可重复利用成分是很关键的。The ability to separate out reusable elements from other waste is crucial.它是包装盒标明的成分之一。It is listed among the ingredients on the package.生产商必须按用量多少的顺序将成分列出。Manufacturers must list ingredients in or...
Now, Bert, quit hogging the limelight.好了，伯特，别出风头。Have you done hogging the bathroom?你要把浴室霸占到什么时候？At first glance, the spotlight - hogging boss seems the villain.乍一看, 好抢镜头的上司似乎是个反面人物....
I'd like to inquire about a book. Do you have The Voyage of the Beagle by Darwin?我要查问一本书, 你们有达尔文著的《探险号航海记》 吗 ?Sinus arrhythmia appeared in 15 % of beagle dogs.beagle犬存在着窦性心律不齐,比例为15%.Objective To identify expression...