Nefedipine was synthesized with m - Nitrobenzaldehyde, ethyl acetoacetate ammonium acetate.以间硝基苯甲醛, 乙酰乙酸乙酯,氨化试剂为原料.Fructone was synthesized from ethyl acetoacetate and glycol using activated carbon supported phosphotungs...
There was frequent thunder and lightning, and torrential rain.雷电交加，大雨倾盆。The game was cancelled owing to torrential rain.比赛因大雨取消了。The River Frome had burst its banks after torrential rain.暴雨过后弗罗姆河决堤了....
Imbibition is thus displacement due only to capillary forces.于是,吸吮是仅仅依靠毛细力的一种驱替.Introduced colophony of tall water imbibition domestic and international production, market condition.介绍了高吸水性树脂国内外生产 、 市场情况.The result is ve...
The principles outlined above for getting the tare weight of containers should be applied.应该用上面概述的测定容器皮重的方法.Please tell me the cargo the tare and the size?请告诉我货物的包装重量和尺寸?Net Weight: the gross weight less tare.净重: 总重扣除皮重后...