This focus on the service life cycle enables mobile network operators to select their best options for control and transport networks.

对服务生命周期的关注允许移动网络运营商为其控制和传输网络选择最好的技术。

youdao

The underlying network architecture can be divided into three layers (Device layer, Transport layer, and Control layer) plus the service layer and will be introduced from bottom to top respectively.

基础网络体系结构可分为三个层次(设备层、传输层和控制层)，其上还有服务层，我们将按照从下向上的顺序分别进行介绍。

youdao

On March 29th Transport for London (TfL), which runs the network, invited tenders to provide wireless Internet service at up to 120 stations, after a successful trial at Charing Cross station.

3月29日，在Charing Cross站的测试成功后，管理网络的伦敦运输局(TfL)为多达120个车站的无线网络服务招标。

youdao

And we have an interest in making sure that companies that benefit from an educated workforce, a free health service, a solid and reliable legal system and an efficient transport network, make their proper contribution to an infrastructure whose absence would be devastating to them.

BBC: Is government too scared of Google, Amazon and Starbucks?