The research results of recovering copper by electrowinning from concentrated cyanide solution were described.叙述了从富集氰化废液中电解回收铜的试验研究结果.Zinc base die castings are always copper plated in cyanide baths.锌基合金的压铸件总是在氰化镀液中镀铜.Th...

n.理想化( idealization的名词复数 )，观念化，理想化的事物...