When this material burns, it flings off a nasty smell.这种物质燃烧时发出一股难闻的气味.He flings his money about on expensive luxuries.他乱花钱买一些昂贵的奢侈品.Every morning Jane flings the windows open and breathes in the fresh air deeply.简每天早晨推开...
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...