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| 隧道炉; 隧道窑; 隧道式烘炉〔退火炉〕 | |||
| 隧道式烘炉; 隧道式退火炉 | |||
| 隧道式炉 | |||
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| 隧道炉; 隧道窑 | |||
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| 隧道炉 | |||
| tunnel furnace: 11 phrases in 3 subjects |
| Metallurgy | 6 |
| Steel production | 2 |
| Technology | 3 |
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