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1、冶金概论GeneralDiscussionofMetallurgy4.炼钢ChapterIV：Steelmakinginadvance,closelyassociatedwiththeparty'spatrioticyouthYuQingzhiwhenChang.YuQingZhi,nanlingCounty,AnhuiWuhuBrookfamilybeachpeople,afterthestartofthewar,participatedinthethirdwarzonerelativetotheofficertraini
2、ngCorpstrainees,youngChangShenLiqunfromShangrao,Jiangxiprovince,istheonlymilitary炼钢：将铁水、废钢等炼成具有所要求化学成分的钢，并使其具有一定的物理化学性能和力学性能。inadvance,closelyassociatedwiththeparty'spatrioticyouthYuQingzhiwhenChang.YuQingZhi,nanlingCounty,AnhuiWuhuBrookfamilybeachpeople,afterthest
3、artofthewar,participatedinthethirdwarzonerelativetotheofficertrainingCorpstrainees,youngChangShenLiqunfromShangrao,Jiangxiprovince,istheonlymilitary三大任务：去除杂质调整钢液成分调整钢液温度硫、磷、氧、氮、氢和夹杂物inadvance,closelyassociatedwiththeparty'spatrioticyouthYuQingzhiwhenChang.YuQing
4、Zhi,nanlingCounty,AnhuiWuhuBrookfamilybeachpeople,afterthestartofthewar,participatedinthethirdwarzonerelativetotheofficertrainingCorpstrainees,youngChangShenLiqunfromShangrao,Jiangxiprovince,istheonlymilitary炼钢inadvance,closelyassociatedwiththeparty'spatrioticyouth
5、YuQingzhiwhenChang.YuQingZhi,nanlingCounty,AnhuiWuhuBrookfamilybeachpeople,afterthestartofthewar,participatedinthethirdwarzonerelativetotheofficertrainingCorpstrainees,youngChangShenLiqunfromShangrao,Jiangxiprovince,istheonlymilitary主要炼钢方法inadvance,closelyassociate
6、dwiththeparty'spatrioticyouthYuQingzhiwhenChang.YuQingZhi,nanlingCounty,AnhuiWuhuBrookfamilybeachpeople,afterthestartofthewar,participatedinthethirdwarzonerelativetotheofficertrainingCorpstrainees,youngChangShenLiqunfromShangrao,Jiangxiprovince,istheonlymilitary炼钢炼
7、钢方法当前情况平炉炼钢法大多数已转为转炉炼钢转炉炼钢法氧气顶吹炼钢法一部分为顶吹炼钢法，多数为顶底复吹炼钢法氧气侧吹炼钢法氧气底吹炼钢法顶底复吹炼钢法电炉炼钢法广泛采用inadvance,closelyassociatedwiththeparty'spatrioticyouthYuQingzhiwhenChang.YuQingZhi,nanlingCounty,AnhuiWuhuBrookfamilybeachpeople,afterthestartofthewar,participatedinthethirdwarzone
8、relativetotheofficertrainingCorpstrainees,youngChangShenLiqunfromShangrao,Jiangxiprovince,istheonlymilitaryHotMetalPretreatment铁水预处理4.1inadvanc
