数字数据传输 meaning in Chinese

digital data transmission

Digital data transmission - specification for basic mode control procedures
数字数据传输.第1部分:基本型控制程序规范
Digital data transmission - character structure for start stop and synchronous transmission
数字数据传输.第2部分:起止传输和同步传输用字符结构
Digital data transmission - basic mode control procedures ; conversational information message transer
数字数据传输.基本型控制规程.信息性会话信息的传输
Digital data transmission - method for use of longitudinal parity to detect errors in information messages
数字数据传输.第3部分:信息报文误差纵向奇偶检测法