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| 精炼金属 | |||
| 精炼期钢水 | |||
| 炼金属 | |||
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finishing metal : 29 phrases in 9 subjects |
| Architecture | 1 |
| Automobiles | 2 |
| Chemistry | 3 |
| Ecology | 2 |
| Environment | 1 |
| General | 3 |
| Metallurgy | 3 |
| Oil / petroleum | 2 |
| Technology | 12 |
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