矿石品位分类装置
ore grading and sorting assembly
贴现现金流
discount-cash flow
discunted-cash-flows
discounted cash-flows
discounted cash flow
Discounted Cash Flow (DCF
贴现现金流量法
discounted cash flow method
表外低品位矿
low-grade submarginal ore
低品位黄铜矿矿石
Low-grade chalcopyrite ore