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威远钢铁厂二号小高爐(有效容积30m~3)自1957年8月投入生产以来,生产指标逐渐提高,月平均利用系数最高达
Weiyuan Iron and Steel Plant II blast furnace (effective volume 30m ~ 3) since August 1957 put into production, production indicators gradually increased, the monthly average utilization factor up to