[1]唐 勇,薛克敏,李 萍,等.基于灰色理论的T形管内高压成形加载路径优化 [J].浙江科技大学学报,2009,(03):266. TANG Yong,XUE Ke-min,LI Ping,et al.Optimization for hydroforming loading paths of T-shaped tube based on grey system theory[J].,2009,(03):266.