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....
Surveys consistently find that men report feeling safe on the street after dark. See, for example, Hindelang and Garofalo (1978).多项调查一致显示，男性认为天黑后在大街上行走是安全的。比如，参见欣德朗和加罗法洛（1978）。...
他的球投得极棒，使我们赢下了两场比赛。He bowled so well that we won two matches.如果你不喜欢，不要投他的票不就得了。Heck, if you don't like it, don't vote for him.她因投毒和谋杀未遂被判20年监禁。She was sentenced to twenty years' imprisonment for poisoning ...
German ferrets constantly spied on the Allied prisoners of war.德国侦探经常监视着盟军的战俘.The agent spied for East Germany for more than twenty years.该特工人员为东德做了20多年的间谍。That day he spied on her while pretending to work on the shrubs....
同调代数在现代发展中起了如此重要的作用.Homological algebra plays such an important part in modern developments.1918显微技术与同调断层摄影系统, 光雷达与雷射光雷达, 光纤检测器.Microscopy and coherence tomography systems, LIDAR and LADAR, fiber - optic sensors.像等级同调(Le...