作者单位:LI Xiu-hua,ZHAO Wen-cheng,WANG Shu-min(Metallurgical Department, Tangshan Vocational College of Science and Technology, Tangshan 063001,China)李秀华,赵文成,王淑敏(唐山科技职业技术学院冶金系,河北唐山063001)LIU Ying(Administration Department, Tangshan Vocational College of Science and Technology, Tangshan 063001,China)刘颖(唐山科技职业技术学院教务处,河北唐山063016)WEI Huan-jun(Technical Center of Tangshan Iron and Steel Co. Ltd, Tangshan 063016, China)魏焕君(唐山钢铁股份有限公司技术中心,河北唐山063016)