Acta Metallurgica Sinica (English Letters) ›› 1999, Vol. 12 ›› Issue (5): 1212-1216.
• Research paper • Previous Articles Next Articles
L. S. Yang1) . H. T. Sun2) and A. N. Zhand2)1) Department of Materials Engineering , Luoyang Institute of Technology , Luoyang 471039 , China2) Department of Electric Engineering , Luoyang Institute of Technology , Luoyang 471039 , China