偏轉(zhuǎn)機構bonging machanism: 粘合機理chaperone machanism: 陪伴機理cutting machanism: 剪節(jié)機構steering machanism: 轉(zhuǎn)向機構topping machanism: 切削裝置下載手機詞典可隨時隨地查詞查翻譯