铁 、 镍 、 铜, 银 、 金, 铱或钌,可用作复合催化剂金属.Iron, nickel, copper, silver, gold, iridium , or ruthenium may be included as cocatalyst metals.使用同样方法, 铱被熔合与铑.Using the same approach, iridium is alloyed with rhodium.铱系统与AMPS系统之比较 ( 续 )...
The tree is so badly damaged they are worried it might topple over.这棵树严重受损,他们担心它会倒掉。He slapped his knee and began to topple from his seat.他拍膝盖,开始在座位上昏昏沉沉地倒下去.How can we topple the chief from his position of trust?我们怎样才能把...