mirror plane of symmetry对称镜面
common plane of symmetry常对称面
glide plane of symmetry滑移对称面
longitudinal plane of symmetry纵向中心铅垂面
axial plane of symmetry对称轴面;对称轴平面
auxiliary plane of symmetry副对称面
reflection plane of symmetry反射对称面
plane axial symmetry平面轴对称
ordinary plane of symmetry普通对称面;常对称面