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我厂在1957年参考以氮锰代镍的方法,曾初步研究成功不含镍的铬锰氮铜钼耐酸新钢种,经在稀硫酸、硫酸铵母液中使用,获得比
I plant in 1957 with reference to nitrogen and manganese on behalf of the nickel method, a preliminary study of the successful non-nickel chromium-manganese nitrogen copper and molybdenum new steel grades, after dilute sulfuric acid, ammonium sulfate mother liquor used to obtain than