趣英语 / 查找:” [共找到152条结果]
  • 并蒽”造句

    Fuson和Josien在 取代的苯并蒽类化合物的研究中验证了这一点.This has been confirmed by Fuson and Josien in studies on substituted benzanthracenes....
  • 甲基”造句

    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 ...