principle of conservation of orbital symmetry
2-dimensional axis symmetry
actinomorphy radial symmetry
auxiliary plane of symmetry
Axial symmetry
轴
轴向对称
轴对称性
轴对称结构
轴对称
中心对称
轴向封称
axis of hexagonal symmetry
axis of tetragonal symmetry
axis of trigonal symmetry
Bilateral Loading Symmetry