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
- red Samite with Heart-shaped design and Persian Script
- red sandalwood
- red sandalwood chessboard
- red sandalwood southern guanmao armchair
- red satellite
- Red Sea
- red sea-aden rift
- red sea bream
- red seabream
- red seabream iridoviral disease
- red-sensitive plate
- red shift
- redshift
- redshift-angular diameter relation
- redshift-apparent magnitude diagram
- redshift controversy
- redshift correction
- redshift cutoff
- redshift-distance relation
- redshift distortion
- redshift effect
- redshift evolution
- redshift-magnitude relation
- redshift parameter
- redshift space