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| 冷轧钢机; 冷轧机 (As cold steel is harder than hot steel, cold steel mills need harder work rolls. 由于冷钢比热钢硬，因此冷轧钢机需要配备更硬的工作辊。) | |||
| cold steel mill: 6 phrases in 2 subjects |
| Metallurgy | 5 |
| Steel production | 1 |
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