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。

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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。

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A WSDL describes a web service by defining its interface, the operations on that interface, their binding to the transport protocol, and the network address they are available at.

WSDL通过定义其界面、该界面上的操作、传输协议的绑定以及它们可使用的网络地址来描述web服务。

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