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.
Chris is so ambitious, so determined to do it all.克里斯踌躇满志，决心要将它都做完。This is an ambitious and intriguing movie, full of striking imagery.这是一部气势恢宏、引人入胜的电影，充满了动人心魄的瑰丽意象。He was by his own account an ambitious workaholic.据他自己所...
They agreed as to the grand outlines, but quibbled over particulars.他们对重大要点表示同意, 但对细节却含糊其词.He quibbled about the price.他为价格争论.To this , Qin Hui quibbled , saying evasively in reply , " Mo'xu'you " or'somet...