This paper analyzes the glyceryl polyether by nuclear magnetic resonance ( NMR ) spectroscopy .用 核磁共振 分析了甘油聚醚.The preparation of catalysts , yield of glyceryl triacetate and and demerits the catalysts were introduced bri...
My four-year-old squabbles with his friends.我那个4岁大的孩子常和他的小伙伴们斗嘴。There have been minor squabbles about phone bills.因电话账单发生过几次小小的争吵。All wars are in reality money squabbles.一切战争实际上都是关于钱的争吵....