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| 铁的直接还原 (【技】用 C 还原铁氧化物的反应叫铁的直接还原。由于这种反应直接消耗 C, 故称为铁的直接还原，简称直接还原。) | |||
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direct reduction of iron : 2 phrases in 1 subject |
| Metallurgy | 2 |
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