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| roof lance; top lance; top mounted lance (In these combination blowing processes, 60 ~ 100% of the oxygen required to refine the steel is blown through a top mounted lance. 采用这些复吹炼钢工艺，精炼钢所需氧的60% ~ 100%是通过顶吹氧枪喷人炉内的°) | |||
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炉顶喷枪 : 2 phrases in 1 subject |
| Metallurgy | 2 |
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