The preparation of catalysts , yield of glyceryl triacetate and and demerits the catalysts were introduced briefly.对上述催化剂制备、三醋酸甘油酯收率、催化剂优缺点作简要介绍.This paper analyzes the glyceryl polyether by nuclear magnetic resonance ( ...
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...
The party had been to the grouse moors that morning.这群人那天上午去了松鸡猎场。"You must come to Tinsley's graduation party." — "I'd be delighted."“你一定要来参加廷斯利的毕业聚会。”——“我很乐意。”He had very kindly asked me to the cocktail party...
This shop specializes in making gold - lettered signBoard, and your patronage is welcome.本店专做金字招牌, 欢迎光临.Burkoth lettered in soccer.伯考思在足球上获得了佩戴校名首字母标志的荣誉。...a crudely lettered cardboard sign.字迹粗糙的硬纸板标志牌The word " exit " ...
一顶有边的软帽遮住了她的脸.A floppy hat screened her face.把点缀好的小盘子放入有边的烤盘中,用植物羊皮纸包好, 上面盖上箔片.Transfer to a rimmed baking sheet lined with parchment paper; cover with foil....