管理学 电子政务网络技术 释 integrated services digital network; ISDN 综合业务数字网 实现话音、数据和图像在同一个网络中传输与交换的重要技术，是一种典型的电路交换网络系统。
网络与数据通信 协议体系与组成结构 释文 integrated service digital network, ISDN 综合业务数字网
- picture carved on the stone lintel of the door in the Giant Wild Goose Pagoda
- picture coding
- Picture Copybook of Plum Blossom
- picture description
- picture description grammar
- picture description language
- picture dictionary
- picture element
- picture frame
- picture language
- Picture News
- Picture of Emperor Tang Minghuang's Night Tour With Candles
- picture of mechanics
- Picture of Official Promotion
- Picture of Survivors of a Great Upheaval in Taiwan
- picturephone
- picture-point
- Picture Post
- picture processing
- pictures
- pictures carved on the memorial tablets of the tombs of the Northern Dynasties
- Picture size
- Pictures of Collecting Local Customsin an Aboriginal Community
- Pictures of Farming and Weaving
- Pictures of the Old World