短語詞組短語screw axis of symmetry 螺鏇對(duì)稱軸optical axis of symmetry 光學(xué)對(duì)稱軸axis of trigonal symmetry 三次對(duì)稱軸sixfold axis of symmetry 六重對(duì)稱軸axis of tetragonal symmetry 四次對(duì)稱軸principal axis of symmetry 主對(duì)稱軸alternative axis of symmetry 交替對(duì)稱軸common axis of symmetry 常對(duì)稱軸;主對(duì)稱軸 返回 axis of symmetry