TY - Journal of Beijing University of Posts and Telecommunications A1 - ZHANG Zhong-hai, LI Duan-ling T1 - Description of Displacement Subgroup for Structure Transformations of Metamorphic Mechanisms Y1 - 2013-06-30 00:00:00.0 JF - Journal of Beijing University of Posts and Telecommunications JO - Journal of Beijing University of Posts and Telecommunications SP - 44 EP - 48,59 VL - 36 IS - 3 UR - {https://journal.bupt.edu.cn/EN/10.13190/jbupt.201303.46.zhangzhh} N1 - 10.13190/jbupt.201303.46.zhangzhh ER -