基本解釋行李艙支架；行李搬運(yùn)車；載波中繼詞組短語短語trunk line carrier channel 長(zhǎng)途干線載波信道exchange trunk carrier system 局間中繼線載波系統(tǒng)exchange acidity trunk carrier system 局間中繼線載波系統(tǒng)Carrier Trunk 載波中繼trunk carrier更多詞組專業(yè)釋義交通運(yùn)輸工程行李艙支架