Corresponding author. Tel: + 86-25-84891678. E-mail address:levine@ nuaa. edu. cn Wang Xiaoping Born in 1964, he received Ph. D. degree in Aerospace Manufacture Engineering from Northwestern Polytechnical University. After- wards, in 2002, he finished his postdoctoral research work in Research Center of CAD/CAM Engineering, Nanjing University of Aeronautics and Astronautics and became an associate professor there. Currently his main research interests include geometric modeling, CAD/CAM, robotic fibre placement and so on. He has published a lot of scientific articles on both domestic and foreign periodicals.