差動(dòng)齒輪加法器differential gear: 差動(dòng)齒輪。 adder: n. 小毒蛇，蝰蛇。 deaf as an adder ...gear differential: 齒輪式差速器automobile differential gear: 汽車差速齒輪bevel gear differential: 錐齒輪差動(dòng)裝置; 錐齒輪式差速器下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
