5MA Zhi-yong,FENG Pei-en,ZHANG Jian,et al.Research on mechanics symmetry ontology[C].World Congress on Engineering 2008,London,U.K.,2008:2-4. 被引量：1
6MA Zhi-yong,FENG Pei-en,SHEN Men-hong,et al.Research on concept system and application of mechanical symmetry[C].The 8th International Conference on Frontiers of Design and Manufacturing.Tianjin,China,2008:23-26. 被引量：1
