“后甲板”的拼音为：hòu jiǎ bǎn...

发现在酸性低粘度醇类溶剂中,五甲氧基三苯甲基正离子的褪色现象.It was observed that the pentamethoxyl red was fading in atidity and viscose alcohol.目的探讨西替利嗪的中间体1-犤 ( 4- 氯苯基 ) 苯甲基 犦 - 哌嗪的合成方法的改进.Objective To study improved synthetic method of 1 - [ ( 4 ...