常见例句双语例句METHODS Bretazenil was synthesized from 3-bromoaniline by cyclization, oxidation and ring-enlargement reaction, etc.方法以3-溴苯胺为起始原料，经过成环、氧化、扩环等反应得到目标产物。www.zgyxzz.com.cn 返回 bromoaniline