Williamson reaction is one important method to prepare unsymmetric ether.Williamson反应是制备不对称醚类化合物的重要方法.Brydon's team-mate Martin Williamson consolidated his lead in the National League when he won the latest round.布赖...
Earl Grey, Darjeeling and Jasmine are best-selling traditional teas.伯爵茶、大吉岭茶和茉莉花茶是最畅销的几种传统茶叶。Jasmine flowers scent the air.空气中弥漫着茉莉花香。You can smell the perfume of jasmine.你可以闻到茉莉花的香味....
Conclusion The microwave - thermotherapy shows a synergism for radia - therapy of tonsil carcinoma.结论:微波热疗联合放疗对扁桃体癌的治疗具有协同增敏作用.The synergism of SMA with above surfactants is weaker than SSMA.SMA与上述表面活性剂的复配增效作用比SSMA要弱.PES...
Became an operation after two months why is cut aculeate keenly feel?做了手术两个月后为什么伤口按着有刺痛感?He observes keenly but says very little.他观察敏锐,却很少发言.Mrs Southern listened keenly, occasionally breaking in with pertinent questions...