碱性氧气转炉炼钢法
basic oxygen converter process
侧吹碱性转炉钢
side-blown basic bessemer steel
碱性转炉钢转炉
basic bessemer steel converter
底吹氧气转炉
oxygen bottom blowing converter
底吹氧气转炉炼钢法
quality basic oxygen process
q bop process
顶吹氧气转炉
basic oxygen furnace
LD Converter
top-blower oxygen convertor