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...
A picture of Rory O'Moore hangs in the dining room at Kildangan.一幅罗里·奥穆尔的画像挂在基尔丹根的餐厅里。"He's gone," Rory whispered in sepulchral tones.“他已经走了，”罗里阴沉地小声说道。It may interest you to know that a boy answering Rory'...
Avoid abrasives, which can damage the tiles.避免使用磨蚀剂，以免损坏瓷砖。The most common finishing operations are mechanical, such as milling, grinding, or polishing with abrasives.最普通的精加工工序是用机械的方法, 如研磨, 磨削或用磨料抛光.Many of these product...
Obviously no reason available for petitioning compulsory licensing.明显不具备请求强制许可的理由....couples petitioning for divorce...申请离婚的夫妇I reminded the committee that we were petitioning for the guarantee of a loan.我提醒委员会,我们恳请要得到一笔...