deleading
退铅
例句
Cyanide leaching of Au and Ag were up to 90% and 95%, respectively. Leaching rate of Cu was up to 95%, rate of deleading was up to 99%.
扩试结果与小试结果基本一致,金银的氰化率分别可达到90%和95%,铜浸出率分别可达到95%,铅的脱除率可达到99%。