Nefedipine was synthesized with m - Nitrobenzaldehyde, ethyl acetoacetate ammonium acetate.以间硝基苯甲醛, 乙酰乙酸乙酯,氨化试剂为原料.The cross - linking reaction between dialdehyde compound and cellulose acetate raises the chemical stabil...
Ethyl acetate ( 71 . 41 b ) was added to the slurry in the vessel.把醋酸乙酯 71.4 磅加到容器中的浆液内.The reverse of Reaction 11 for acetate may be combined with the electron acceptor reactions.对于醋酸盐、反应11的逆反应可以与电子接受体反应组合在一起.In benzene...
He distracted them by joking and imitating movie and radio comedians.他用开玩笑的方法或者模仿电影及广播中的滑稽演员来对付他们.And while you've been imitating Switzerland, people are dying.在你学瑞士玩和平中立的时候, 人类就要灭亡了!Is it a case of art imitating li...
Oxford United have transfer-listed two midfield players.牛津联足球俱乐部已把两名中场球员列入转会名单。the team's midfield dynamo这个队的中场发动机Graham pulled a masterstroke by playing Paul Merson in the centre of midfield.格雷厄姆让保罗·默森打中场中路堪称神来之笔。...
那些狗继续用爪子疯狂地抓铁丝网。The dogs continued to paw and claw frantically at the chain mesh.到了夜里，周遭的铁丝网都被灯光照亮。By night, the perimeter wire was illumined by lights.营地周围架着尖利的铁丝网，且有宪兵看守。The camp is surrounded by razor-wire fences and ...