In the reaction of acetylation and nitration 1,2 ? dichloroethane was used as solvent.在乙酰化、硝化反应中引入了1,2-二氯乙烷溶剂.Polyurethane demulsifier for crude oil were prepared from polypropylene glycol, xylene, toluenediiso - cyanate...
《牛津化学初级读本》丛书旨在论述有机化学中的重要问题。The Oxford Chemistry Primers aim to cover important topics in organic chemistry.老读本选文诱导儿童边读边思考.The old books contain selections that invited critical reading.读本篇课文的第五段和最后一段.Read the fifth and t...
马丁对于这一悖论的解释尽管严格说来不合乎逻辑, 卻似乎是最好的解释了.Although strictly illogical, Martin's interpretation of this paradox seems the best.这个故事存在多重悖论。The story contains many levels of paradox.矛盾和悖论越来越多.Contradictions and paradoxes aros...
This what treats fracture of old people hipbone?老年人胯骨骨折该什么治疗?This is the way how he always treats me.他一贯就是这样对待我的。She treats him as if he were the fount of all knowledge .她把他当成无所不晓。The test of any civilised society is how...
Do not abet your friend to pry into other people's privacy.不要唆使朋友去窥探别人隐私.Be do grateful to those who rebuke you, because they abet your wisdom!一定要感激那些斥责你的人, 因为他们助长了你的智慧!Allegedly, backside abet is enigmatic general ...
We'll go to a meeting in Birmingham and come straight back.我们将去伯明翰参加会议，然后马上回来。It's a long way to go for two people in their seventies.对于两个七十几岁的人来说，这段路太远了。You flatter yourself. Why would we go to such ludicrous ...