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| 精矿品位 (【技】精矿产品中所含金属量占精矿数量的百分比。它反映了精矿的质量指标。) | |||
| 精矿等级 | |||
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concentrate grade : 6 phrases in 2 subjects |
| Metallurgy | 4 |
| Technology | 2 |
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