The reaction conditions on oxidation of 2 - methylpyridine to 2 - acid by oxidation of potassium dichromate were studied.研究了以2-甲基吡啶为原料,以重铬酸钾为氧化剂,利用化学氧化法合成 2- 吡啶甲酸的反应条件....
这些做法对于植物的能育性常有损害,这一点是无可置疑的.That these processes are often injurious to the fertility of a plant cannot be doubted.这样的杂交随时都会发现有合理的间型能育性.Such crosses are found to be reasonably interfertile....
Helen made a successful career in cabaret.海伦在卡巴莱歌舞表演上非常成功。Helen made a successful career in cabaret...海伦在卡巴莱歌舞表演上非常成功。The cabaret owns business suite, standard suite and the building 147 of a marks,11 of the size board r...
They're the toughest team in probably all of baseball, the toughest lineup.们是棒球界中的精英队伍, 最强悍的打线.I feel so uncertain that why your lineup removed Gaby Mudingayi besides.我很不解,为何你的阵容里排除了穆丁加一?You could have picked him ou...
当他们走近时，每扇门外都有一名卫兵肃身立正。Outside each door a guard sprang to attention as they approached.全副武装的士兵们立正站着。Soldiers in full combat gear stood at attention.中士立正敬礼。The sergeant stood to attention and saluted....