背靠背高压直流输电(HVDC)系统已经在交流系统连网中得到了应用。

Back to back HVDC system had been used to join ac systems.

youdao

附带的RS422接口可以与其它控制设备进行相连，为以后系统的扩展或系统连网提供方便。

The supplementary RS422 interface can be connected with other controlling equipment, which provides the convenience for the system to extend and join network.

youdao

尽管我有时候喜欢编辑文本文件，但是大多数管理员更喜欢通过菜单驱动的系统配置连网，这样更灵活、更方便。

While at times I enjoy the ability to just edit text files, most administrators prefer the flexibility and ease of a menu-driven system to configure networking.

youdao