交换: exchange; swap; interchange; ...型: mould; model多: many; much; more兆位: megabit数据: data; record; information服务: give service to; be in the s ...交换的多兆位数据服务: smds交换多兆位数据服务: smds; smms交换式多兆位数据服务: switched multimegabit data service交换兆位数据服务: switched multimegabit data service转换多兆位数据服务: smds switched multimegabit data service交换多兆位数据: smds切换式多兆位数据服务（通过电话网实现的）: smds switched multimegabit data service交换多兆数据服务: smds:switched multimegabit data service多兆位数据交换业务: smds switched multimegabit data service; switched multimegabit data service (smds)多兆比特交换数据服务: switched multimegabit data service smds交换式多兆比特数据服务: smds switched multimegabit data service交换式多兆位数据传送业务: switched multimegabit data service高速电路交换数据服务: high-speed circuit-switched data service hscsds高速交换式数据服务: smds数据服务: data service; videotex数据服务器: ds data server数据服务区: dsr data serving region单元数据服务: udts unitdata service广域数据服务: wide area data service
