作者单位:YANG Li,GUI Yongliang(Key Laboratory of Hebei Province Modem Metallurgy Technology, College of Metallurgy and Energy, Hebei United University, Tangshan 063009)杨丽,贵永亮(河北联合大学冶金与能源学院现代冶金技术省重点实验室,唐山063009)ZHANG Wei(Modern Technology and Education Center, Hebei United University, Tangshan 063009)张伟(河北联合大学现代技术教育中心,唐山063009)