1. Fujian Key Laboratory of Intelligent Machining Technology and Equipment (Fujian University of Technology), Shangjie Town, Minhou County FuZhou, FuJian 350100, P. R. China
2. Fujian Chuanzheng Communications College, CangShan District, FuZhou, Fujian 350007, P. R. China
3. Fuzhou University, Shangjie Town, Minhou County, Fuzhou, Fujian 350108, P. R. China