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
- Liaozhong Qu
- Liapunov conditions
- liar
- liar paradox
- Lib
- Li Bai
- Libai
- Li Bai and Du Fu
- Libai banished to Yelang
- Li Baichuan
- Li Baifeng
- Li Bai in drunkenness
- Li Bai's Poem with Seven Characters to a Line by Zhao Yiguang in Seal Script
- Li Baiyao
- Li Baochen
- Li Baoguo
- Li Baojia
- Li Baoqun
- Li Baotian
- Li Beihai
- Liber Abaci
- liberal arts college
- Liberal Arts College of the University of Warwick
- liberal education
- Liberalerna