In the basic oxygen steel making process, referred to as BOS, BOF or LD, typically the carbon content is reduced from 4% to 0.05%.是什么意思_In the basic oxygen steel making process, referred to as BOS, BOF or LD, typically the carbon content is reduced from 4% to 0.05%.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句