The extraction mechanism of palladium in chloride system by di ( 1 - methyl heptyl ) acetamide ( N _ ( 503 )) has been studied. 本文研究了N, N二 甲庚基乙酰胺 ( N_ ( s03 ) )从氯化物体系中萃取钯的机理.
She's an insomniac; she only sleeps for two or three hours a night.她患失眠症, 每晚只睡两三个小时.The insomniac is habitually afflicted with wakefulness at times when he wishes to sleep.失眠症患者,这种病人在他想睡觉时经常特别清醒....
The uncovered bucket in the corner stank.角落里那只未盖盖子的桶散发着臭味。Security forces have uncovered a plot to overthrow the government...安全部队揭露了一起推翻政府的阴谋。The dish had been uncovered when I entered the kitchen.我进厨房时, 那盘菜已被掀开。The ope...