Methods: The synthesis uses urea as material process includes condensation, opening loop, chloridization and nitrosation reaction.方法以尿素为原料,经缩合, 开环, 氯化,亚硝化而得....
A method of synthesis of butyl isobutyrate catalyzed by amidosulphonic acid has been studied.以氨磺酸为催化剂催化合成了异丁酸丁酯,确定了酯化优化条件.The method about synthesis of approximate straight line motion mechanism based on moving centrode ...
The chalky soil around Saumur produces the famous Anjou wines.索米尔周围的白垩质土壤出产著名的安茹葡萄酒。The vineyards of Anjou extend from west of Angers to up-river of Saumur.安茹葡萄园从昂热西部一直延伸到索米尔的上游。He was nominated a member of the district ...
Joyce sits with her fingers interlocked under her chin.乔伊丝坐在那里，十指相扣撑着下巴。The two stags interlocked their horns.两只雄鹿把角叉到一起了.The problems of Israel, Lebanon, and the Gulf were tightly interlocked...以色列、黎巴嫩与海湾的问题一环扣一环。The in...