短語(yǔ)詞組短語(yǔ)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)議電話滙接機(jī);[通信]會(huì)議電話滙接臺(tái)TRUNK CONFERENCE TELEPHONE 乾線會(huì)議電話 返回 conference telephone