以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.Butyraldehyde 1,2 proparediol acetal was synthesized by using stannous chloride as catalyst.以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.Butyraldehyde 1,2 propanediol acetal was synthesized by using st...
I'll have the steak and chicken combo platter.我要牛排和鸡组合餐。For single selection, the combo box is a superb control.对于单一选择, 组合框是非常好的控件.Combo boxes clearly differentiate between the text - entry part and the list - selec...
The Chinese - tennis team made a corporate effort to win countess championships.中国乒乓球队通过集体的共同努力赢得了无数次冠军.Countess: I rejoice to say I do not.女伯爵: 我很兴奋地说我不是这样的....the Dowager Countess Spencer...斯潘塞伯爵遗孀He looked disappointe...