The extraction of penicillin G with petroleum sulphoxide and di - isooctyl.系统研究了亚砜类萃取剂石油亚砜和二异辛基亚砜萃取青霉素G的性能.A gas chromatography method for the quantitative analysis of isooctyl acid was introduced in this paper.摘要建立了异辛酸合...
For Pritchard, reaching an Olympics was the climax of her career.对普里查德来说，参加奥运会是她事业上的巅峰。I will be in Atlanta for the next Olympics.我将参加在亚特兰大举行的下届奥运会。This drugs scandal is another blot on the Olympics.这次的兴奋剂丑闻又给奥林匹克运动会抹了黑。...
成天受嘲讽是很令人泄气的.It's very discouraging to be sneered at all the time.上座人数一直持续下降，使得戏剧导演产生悲观泄气的情绪。Attendance figures had been steadily dropping, creating a mood of doom and discouragement among theatre directors.令人泄气的环境对...