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...
Lead is more solvent in acidic water.铅在酸性水中更易溶解。We must cut back on expenditure in order to remain solvent.我们应减少开支,以备急用.Gasoline is a solvent liquid which removes grease spots.汽油是一种能去掉油污的有溶解力的液体....
玛丽安怀着一颗年轻、不断进取的心去寻求新的天地。Marian retains a restless, youthful spirit, in search of new horizons.我那时17岁,怀着满腔仇恨.I was 17 and filled with a lot of hate.她怀着极大的兴趣读完了塞塞莉娅的最后一封信。She read Cecelia's last letter with uncommon i...
你能给所有这些书编目录吗？Can you catalog all these books?你能给所有这些书编目录 吗 ?Can you catalogue all these books?长舌联合会的同僚们编目录编累了.Long Tongue League's colleagues are fatigued with cataloguing....
Conceptual meaning: the central part of meaning, which contains logical, cognitive, or denotative content.概念意义: 意义的中心部分, 包括逻辑的, 认知的, 或者外延的内容.Theories in cognitive psychology are attempts to summarize large sets of data.认...
Precipitates are usually collected by centrifugation at intervals.常常是用离心法分段收集沉淀的.Try to get into the habit of eating at least three small meals a day, at equally spaced intervals.尽量养成每天至少吃3顿小餐的习惯，而且每餐的间隔要相同。She began to ...
如果我对此不做点儿什么，就是不负责任。I would be remiss if I did not do some-thing about it.这使我更加坚定了不做修女的决心。It has confirmed me in my decision not to become a nun.我只会闲呆着，什么事也不做。I'm just going to be hanging around twiddling my thumbs....
A car ran past, spotting my coat with mud.一辆汽车驶过, 给我的外衣溅上了泥点.It is spotting with rain.天在下零星小雨.You have to be good at spotting trouble on the way and heading it off.你必须善于发现潜在的麻烦并加以化解。...