Acta Metallurgica Sinica (English Letters) ›› 1989, Vol. 2 ›› Issue (2): 153-156.
• Research paper • Previous Articles Next Articles
YONG Qilong LI Yongfu Yunnan Institute of Technology,Kunming,ChinaSUN Zhenbao WU Baorong Central Iron and Steel Research Institute,Ministry of Metallurgical Industry,Beiiing,China YONG Qilong,Department of Mechanical Engineering,Yunnan Institute of Technology,Kunming,China