subterminala

例句：

1. 1. The subterminal cable is responsible for transmitting data between the main network and the remotedevices.
   次终端电缆负责在主网络和远程设备之间传输数据。
2. 2. The subterminal device is designed to connect to the main network and provide additional functionality.
   次终端设备旨在连接到主网络并提供额外功能。
3. 3. In this case, the subterminal device is used to extend the coverage area of the main network.
   在这种情况下，次终端设备被用来扩展主网络的覆盖区域。