CSD (Circuit-Switched Data)
Referring to data communications over a circuit-switched network,
particularly a cellular radio network such as Digital Advanced Mobile Phone Service (D-AMPS). See also cellular radio, circuit switch, and D-AMPS.
科学参考收录了5291条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。