此外，还介绍了从废液中回收银的原理和几种方法。
In addition, the principle of recovering silver from waste solution and methods of recovering silver are introduced.
按要求签发和回收银行合同，并按月准备酒店银行账目总表。
Issue and return house bank contracts as required and prepare house bank accounts summary on a monthly basis.
提出了一种从硝酸银废液中回收银新方法，可直接得到成品银。
It is presented that a new method directly producing product silver from waste silver nitrate solutions.
应用推荐