| 1. | In a time division multiplex ( tdm ) system , a repetitive group of signals resulting from a signal sampling of all channels , including any additional signals for synchronizing and other required system information 在时分多路复用( tdm )系统中,由所有信道的信号采样中产生的重复信号组,它包括为同步要求的附加信号和其它需要的系统信息。 |