底架底框底盤架底托架基礎(chǔ)構(gòu)架bar underframe: 桿式底架carriage underframe: 車子底盤composite underframe: 復(fù)合結(jié)構(gòu)的底架cushion underframe: 緩沖底架, 活動(dòng)中梁底架locomotive underframe: 機(jī)車底架下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯