碱性氧气转炉炼钢法
basic oxygen converter process
氧气转炉炼钢oxygen converter sreelmaking
oxygen converter sreelmaking
底吹氧气转炉
oxygen bottom blowing converter
顶吹氧气转炉
top-blower oxygen convertor
LD Converter
basic oxygen furnace
底吹氧气转炉炼钢法
quality basic oxygen process
q bop process
氧气斜吹旋转转炉
oxygen inclined blowing rotating converter
碱性底吹转炉
bottom-blown basic converter
碱性炼钢转炉
basic bessemer steel converter