作者单位:LUO Guo-min(Guangdong Songshan Polytechnic College,Qujiang 512126,China)罗国民(广东松山职业技术学院,广东曲江512126)GUO Han-jie(Science and Technology University of Beijing,Beijing 100083,China)郭汉杰(北京科技大学,北京100083)WEN Zhi-hong(Guangdong Shaoguan Iron & Steel Group Co.Ltd.,Qujiang 512122,China)温志红(广东韶关钢铁集团公司,广东曲江512122)