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...
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....
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...
She's just being childish and immature.她在耍小孩子脾气，真是任性。Don't be so childish!别那么幼稚！We eventually ran out of patience with his childish behaviour.我们终于对他幼稚的行为忍无可忍....