The most common form of concentration, used to connect n transmitting devices to m receiving devices, where n is much greater than m. Buffering of data is done by the input devices of the line-switching system if the transmission medium is busy.
科学参考收录了60776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。