首页 > Term: second-class ore
second-class ore
An ore that needs preliminary treatment before it is of a sufficiently high grade to be acceptable for shipment or market. Compare: first-class ore
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
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创建者
- ed.young
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(Milwaukee, United States)