分组: divide into groups交换: exchange; swap; interchange; ...数据传输: data transmission业务: vocational work; professiona ...分组交换数据传输网: psdtn packet switched data transmission network提供数据传输业务的分组交换公用数据网: for the provision of data transmission services分组交换数据业务: psds packet switched data service分组交换数据: packet switch data; packet switched data数据传输业务: data transmission service分组交换数据网: psdn packet switched data network分组交换数据网络: packet switching data network; psdn: packet-switched data network公众数据传输业务: pdts public data transmission service国际数据传输业务: international data transmission service世界数据传输业务: wdts world data transmission service; world data transmission service分组交换数据接入单元: psdau packet switched data access unit分组交换数字数据网: packet switched digital data network公众分组交换数据网: pspdn packet switched public data network中国公用分组交换数据网: china public allocation exchangeability; chinapac china public allocation changeability分组交换数据网，公共交换数据网: packet switched data network包交换数据传输服务: packet switched data transmission service; packet-switched data transmission service; packet-switching data transmission service电路交换数据传输服务: circait-switched data-transmission service封包交换数据传输服务: packet-switched data-transmission service线路交换数据传输服务: circuit switch data transmission service帧中继数据传输业务: frdts frame relay data transmission services分组交换业务: packet switched service; pss packet switching service
