N, N - diethylaniline was synthesized under normal tempreture with tetraethyl ammonium hydroxide as phase transfer catalyst.以苯胺和溴乙烷为原料,用四乙基氢氧化铵作相转移催化剂,在常压下合成N, N二乙基苯胺....
She would balance and temporize endlessly before reaching a decision.她在做出决定前会不断地犹豫观望和见风使舵.He yakked on endlessly about his wife.关于他的妻子, 他喋喋不休地说个没完。arguing endlessly about money为钱财问题无休止地争吵a boring and endlessly repetitive...
目的建立利用原子吸收鉴别中药材贝母的方法.ObjectiveTo establish an identification method for Fritillaria by atomic absorption.结果: 处方中的黄芪 、 参、贝母三味药的薄层色谱具有鉴别特征.Results: Describable characteristics of Huangqi , Danshen , Tiandong and Zhebeimu b...
我不喜欢在银幕上表演裸戏。I don't like taking my kit off on screen.许多观众对银幕暴力心存反感。Many viewers have strong opinions about violence on the screen.麦考利·卡尔金的银幕初吻来自于忸怩作态的11岁童星安娜·克鲁姆斯基。Macaulay Culkin receives his first screen kiss fro...