分组: divide into groups交换: exchange; swap; interchange; ...数字: figure; digit; numeral; char ...数据: data; record; information网: net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分组交换数据网,公共交换数据网: packet switched 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: packet switch data; packet switched data法国公用分组交换数据网名称: transpac分组交换数据业务: psds packet switched data service交换数据网: switched data network分组交换数据传输网: psdtn packet switched data transmission network分组交换数据传输业务: psdts packet switched data transmission service分组交换数据接入单元: psdau packet switched data access unit分组交换公共数据网: packet switched public data network pspdn; pspdn packet switched public data network分组交换公用数据网: packet switched public data network pspdn; pspdn packet switched public data network; telenet数字数据网: digital data network公用交换数字数据业务: psdds public switched digital data service包交换数据网: packet-switched data network交换数据网络: switched data network数字数据网络: ddn digital data network; ddn:digital data network; digital data network数据分组交换: data packet switching