氯苯 、 溴苯和苯硫酚化合物的谱带出现于低限附近.In compounds such as chorobenzene, bromobenzene and thiophenol it lies close to the lower limit.方法以3-甲氧基苯硫酚和对甲氧基 - 苯乙酮为原料经溴化、烃基化、环合重排排制得目标产物.Methods: The target compound was synthesized through b...
大伙儿在游泳比赛前欣赏了跳水表演.The crowd enjoyed a diving display before the swimming races.他的晋升引起了大伙儿沸沸扬扬的议论.His promotion has provoked much discussion among us.嗨，各位，大伙儿都知道今天我们为什么在这里，那就直入正题吧。Hi everyone, we all know why we are here t...