Silver - coated carbonyl iron powder was prepared by using electroless plating method.用化学镀法,甲醛为还原剂,制备镀银羰基铁粉.The p - chlorophenyl isocyanate is synthesised by carbonyl chloride and p - chloroaniline . The yield is 90 %.采用...
Here are aged Moors with flowing white beards, and long white robes with vast cowls.这儿有批上年纪的摩尔人,白须飘拂,身穿白长袍,头顶大风兜.Specially developed cowls direct air into the building, and also draw used air out.一种特制的罩可以将空气导入大楼, 也可以将废气排...
a globule of fat一滴油It is impossibls to rehydrate a mucus globule once it has become dehyrated.一旦已经脱水,粘液不可能再水化.The shape of a liquid globule in a free - falling elevator is calculated.定量讨论了自由降落升降机中实际液滴的形状....