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| roller-hearth furnace; roller-hearth kiln; roller-hearth furnace (The ironmaking process utilizes low-cost iron ore fines that are reduced to DRI in a roller hearth furnace using coal as a reductant 这一炼铁法使用了廉价铁矿粉，以煤作为还原剂在辊底式炉中将铁矿粉还原成直接还原铁。) | |||
| roller-hearth type furnace | |||
| roller hearth furnace | |||
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| roller-hearth continuous furnace | |||
| 辊底式 炉: 9 phrases in 2 subjects |
| Metallurgy | 7 |
| Technology | 2 |
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