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在汽車(chē)的復(fù)雜機(jī)械結(jié)構(gòu)中，有一種部件默默承擔(dān)著動(dòng)力傳遞的關(guān)鍵角色，那就是汽車(chē)齒輪。...
在汽車(chē)的復(fù)雜機(jī)械結(jié)構(gòu)中，變速箱齒輪扮演著至關(guān)重要的角色。...
