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| 氧气顶吹转炉出钢口 (A BOF taphole is replaced when the inner diameter of the existing taphole sleeve becomes excessively large and tap time becomes short. 当氧气顶吹转炉的出钢口袖砖内径变得过大、出钢时间变短时，其出钢口就应更换。) | |||
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BOF taphole : 3 phrases in 1 subject |
| Metallurgy | 3 |
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