分布式注册与索引服务器提供了信息资源节点的注册、发现、动态维护等功能。
Distributed registry and index server serves for registration, discovery and maintenance of various information resources.
该系统具有视频压缩、解码、网络传输、图像储存、图像索引回放、摄像机远程控制、云台控制和音频报警等功能。
This system had functions with video compression, decode, network transmission, image store, image index playback, long-range control of vidicon, PTZ control and voice frequency alarm.
典型的门户网站通常都有搜索引擎、免费邮箱及聊天室等功能。
A portal typically has search engines and free email and chat rooms etc...
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