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.The extraction mechanism of palladium in chloride system by di ( 1 - methyl heptyl ) acetamide ( N _ ( 503 )) has been studied....
我被要求伸展手臂,收紧胸肌。I was required to hold out my arms and flex my pectorals.那位裁缝在衣服的腰部打褶收紧.The dressmaker gathered the cloth to the narrowest part of the waist.收紧肌肉,然后起跳.Gather up your muscles and jump....