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...
His grandfather's stern eyes were scrutinizing him , and Chueh - hui felt his face reddening.祖父的严厉的眼光射在他的脸上.The machine hushed, extraction and injection nozzles poised , scrutinizing its targets.机器“嘘”地一声静了下来, 输入输出管道...
Their flute - like warbling became happy and unrestrained.从中传出的笛儿般又细又亮的叫声,也就格外轻松自在了.Talk was unrestrained in the motels and bars.在汽车游客旅馆或是酒吧间里,人们谈起话来毫无顾忌.His campaign has been unrestrained and often vulgar.他的竞选活动恣意而为而且往往...
Nearby chambers held Tut's legendary trove of funerary goods, including several royal chariots.近处的墓室是图坦王传说中的陪葬品宝库, 包括几辆国王战车.The BBC used Vangelis's Chariots of Fire as its Olympic theme tune in 1984.BBC 选用了范吉利斯...