文件 /etc/hosts 包含指定给主机名的地址（包括一个 IP 地址、全限定主机名和主机名）。

The file /etc/hosts contains addresses that are assigned to hostnames (including an IP address, the fully qualified hostname, and the hostname).

youdao

本文介绍了全IP核心网的概念以及无线网、骨干网、信令网的演进。

This paper introduces the concept of all IP core network, then discusses the evolution of wireless network, backbone network, signalling network.

youdao

IMS为未来的多媒体数据业务提供了一个通用平台，它是向全ip网络演进的重要一步。

As a platform to provide multimedia data service, IMS is an important step to make Communications network become an IP network.

youdao