简要介绍了集传输与接入、干线与站场一体化的专用通信结构模式的全业务专用通信系统。

The paper briefly introduced a special communication system with full services, which combined transmission and access and integrated the trunk network with station and yard networks.

youdao

简要介绍了集传输与接入、干线与站场一体化的专用通信结构模式的全业务专用通信系统。

The paper briefly introduced a special communication system with full services, which combined transmission and access and integrated the trunk network with station and yard networks.

youdao