The hydrogenation of terpineol to dihydroterpineol catalyzed by Raney Nickel modified by potassium borohydride was studied.研究了以硼氢化钾修饰的雷尼镍催化剂催化松油醇加氢制备二氢松油醇的反应....
别说我活该，不然让你尝尝我的拳头。Don't say it serves me right or I'll thump you.除非你要搞什么小动作，不然你为什么单要一间房？Why did you need a room unless you were up to something?别这么吝啬布料，不然做出来的窗帘会显得特寒酸。Don't be mean with fabric, otherwise cu...
At the peak of its popularity in the late nineties, the band sold ten million albums a year.20世纪90年代后期那个乐队最红的时候,每年售出1,000万张唱片.At the peak of efficiency, the marginal cost of production equals the average cost of producti...