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| 隔离焦冲天炉中隔开两种牌号铁 | |||
| 隔焦; 隔离焦 (用于隔开化铁炉中两种牌号的铁) | |||
| 隔离焦 | |||
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coke split : 2 phrases in 1 subject |
| Metallurgy | 2 |
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