正交軸 mutually perpendicular: 互相垂直的mutually perpendicular axes: 正交軸系mutually perpendicular lines: 互相垂直perpendicular axis: 垂直軸perpendicular axis theorem: 垂直軸定理，正交軸定理下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
