Glyoxylic acid was rapidly synthesized by catalytic oxidation of glyoxal with H 2 O 2.在催化剂存在下,用双氧水氧化乙二醛溶液快速合成了乙醛酸.Glyoxal is prepared with waste liquid propellant HNO 3 - 27 S and ethanal.利用报废的液体推进剂硝酸-27S和乙醛制备乙二醛.There a...
The holes are only borings, less than a foot in diameter.油井仅仅是一些钻孔, 其直径不到一英尺.These borings consist of rock fragments, ash coal and other materials.这些孔屑包括石头碎片 、 灰尘、煤渣和其他东西.Based on thermodynamics principle, the feasibilit...
The ousting of his predecessor was one of the most dramatic coups the business world had seen in years.将他的前任扳倒是商界多年以来最富戏剧性的一场胜利。The resulting financial chaos led to the ousting of Bristol - Myers's boss.随后引发的财政混乱导致了...
The large lamplit room was murky with woodsmoke.木柴冒出的烟把亮着灯的大房间弄得烟雾弥漫。a lamplit figure in the chair灯光下坐在椅子上的人Glimpsed through lamplit windows, everybody seems to be getting ready for something.透过灯烛辉煌的窗子望进去, 人人似乎都在作什么准备....