pig iron
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pig iron
pig iron
pig iron
生铁变成钢要除掉大部分而不是全部的杂质.
2.Pigironusedaspermanentballast.
压载铁做为永久性压舱物的生铁
3.AfurnaceinwhichpigironisconvertedintosteelbytheBessemerprocess.
炼钢熔炉一种通过酸性转炉法将生铁练成钢的设备
4.Heaskedushowmuchpigironwecouldproduceperdayandcalculatedwithushowmuchwecouldputoutinayear.