交换: exchange; swap; interchange; ...多: many; much; more兆: omen; augury; portent; sign数据: data; record; information服务: give service to; be in the s ...交换多兆位数据服务: smds; smms转换多兆位数据服务: smds switched multimegabit data service多兆比特交换数据服务: switched multimegabit data service smds交换的多兆位数据服务: smds交换式多兆比特数据服务: smds switched multimegabit data service交换式多兆位数据服务: switched multimegabit data service交换型多兆位数据服务: smds交换多兆位数据: smds交换多兆比数据业务: smds交换多兆比特数据业务: switched multimegabit data service; switching multi-gigabit data service smds交换兆位数据服务: switched multimegabit data service切换式多兆位数据服务（通过电话网实现的）: smds 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开放数据服务: open data service
