量測桿槓比 lever ratio: 杠桿比ratio lever: 比率杠桿cardiothoracic ratio measuring unit: 心臟胸腔比率測定儀armature lever ratio: 銜鐵傳動比steering ratio selector lever: 前輪轉(zhuǎn)向操縱手柄下載手機(jī)詞典可隨時隨地查詞查翻譯