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| 高炉喷吹天然气 (【技】天然气的主要成分是 CH₄。 CH₄ 在高温时分解吸收大量热量，因而高炉喷吹天然气时最好能结合高炉富氧。) | |||
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natural gas injection into BF : 2 phrases in 1 subject |
| Metallurgy | 2 |
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