论述了以相转移催化剂催化合成邻硝基茴香醚的新方法.The process of synthesizing o - nitroanisole by using phase - transfer catalyst was described.丁化羟基茴香醚: 一种白色蜡状的苯酚抗氧化剂, CHO, 用于保存脂肪和油, 尤指在食物中.BHa: a white, waxy phenolic antioxidant, CHO, used to p...
Come along, lad. Time for you to get home.来吧，小伙子。你该回家了。Come along, Osmond. No sense in your standing around.快点儿，奥斯蒙德，你闲站着干什么。Come along, someone must want to know my invention.再努力想想看, 肯定会有人对我的发明感兴趣....
It began to rain and we scurried for shelter.下起雨来,我们急忙找地方躲避.At their approach the little boy scurried away and hid.他们走近时，小男孩急忙跑开藏了起来。At their approach the little boy scurried away and hid...他们走近时，小男孩急忙跑开藏了起来。She said goo...
The disease was brought by Westerners after the Cheng - te period of the Ming dynasty.明朝正德以后,这病由洋人带来.Utahans are also Westerners, people with a wide respect for individual liberty.犹他州人也是西部人, 对个人自由有广泛尊重.Why most westerner...
Our Commander - in - Chief in Greece has just flown back for further instructions about massacring the Greek people.我们驻希腊的 总司令 最近刚飞回来请示关于屠杀希腊人民的事.He made a powerfu 1 speech, massacring his opponents.他作了一次有力的发言, 彻底击败了他的对手...
The aroma contributes to the flavors we discern on our palates.芳香嗅觉丰富了软腭对于口感的辨别种类.This cohesion contributes to the improvement of reading ability for its immediateness and accessibility.这种衔接手段直观且容易把握,有助于阅读能力的提高.The chip ...
Cooling system of tool with backwater tank, filter, pump and installation until the adjacencies of spindle.配有背负式水箱 、 过滤 、 水泵等直达主轴端部的冷却系统.Quebec remained a backwater until the 1960s.魁北克直到20世纪60年代还是一片死气沉沉。Britain could bec...