I've tried everything from herbal cigarettes to chewing gum.中草药香烟、口香糖之类的我统统都试过了。They stopped up leaks with chewing gum.他们用口香糖粘住了漏缝。She was admonished for chewing gum in class.她在课堂上嚼口香糖,受到了告诫。...
The alkylation of isoparaffin with olefin is an important process of petroleum processing.异构烷烃与低分子烯烃的烷基化反应是石油加工的重要过程之一.Recent advances in ring closing metathesis ( RCM ) reaction, including olefin and enyne metathesis re...
Pharmaceutical Industry for the production of Bicyclohexane Piperidine BENZTROPINE Dihydrobrohide, diphenhydramine hydrochloride salt.医药工业中用于生产双环己哌啶 、 苯甲托品氢溴酸盐,苯海拉明盐酸盐等....