Leaching of gold is a nwe method for non - cyanidation leaching gold.碘化浸金是一种新的 非 氰化浸金方法.It is found that the dispersing, impurity removal and chelating effect of acid help gold cyanidation.研究结果表明,柠檬酸的分散 、 除杂及螯合作用有助于金的氰化浸...
He is best know for his trilogy on working life.他以描写工人阶级生活的三部曲而著名。Like Dos Passos he did write a trilogy.他像道斯·帕索斯那样写过一部三部曲.the final instalment in the trilogy三部曲的最后一部…Laurie Lee's trilogy of autobiographical novels....