短語詞組短語conference e telephone device 會(huì)議conference e telephone subset 會(huì)議conference e telephone switch system 會(huì)議conference e telephone control board 會(huì)議conference telephone subset 會(huì)議電話分機(jī)conference telephone device 會(huì)議電話裝置conference telephone tandem board 會(huì)議電話匯接機(jī);[通信]會(huì)議電話匯接臺TRUNK CONFERENCE TELEPHONE 干線會(huì)議電話 返回 conference telephone