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...
The colonel was rewarded with a resounding cheer from the men.士兵对上校报以震天的欢呼声。The show was also a resounding critical success.这次演出同样好评如潮。She got a resounding round of applause.她赢得一片热烈掌声。...
这本文集是由埃伦·奈特编选的。This collection of essays is edited by Ellen Knight.奈特利先生, 我本想请你作陪.I would ask for the pleasure of your company, Mr. Knightley.这次音乐会是由奈特集团赞助举办的.This concert has been arranged under the auspices of the Knig...
你可以进来, 不过你那个带过滤嘴的小伙伴得待外面.You can in, but your filter - tipped little buddy has to stay outside!我抽的是带过滤嘴的烟,这样不浪费烟丝.I smoke filter - tipped cigarettes in order not to waste pipe tobacco.是因为它是低焦油, 还是因为那种新式的过滤嘴, 你为什么抽流金岁月 呢 ...