短語詞組短語mirror plane of symmetry 對稱鏡面common plane of symmetry 常對稱面glide plane of symmetry 滑移對稱面longitudinal plane of symmetry 縱向中心鉛垂面axial plane of symmetry 對稱軸面;對稱軸平面auxiliary plane of symmetry 副對稱面reflection plane of symmetry 反射對稱面plane axial symmetry 平面軸對稱ordinary plane of symmetry 普通對稱面;常對稱面 返回 plane symmetry