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
- satellite navigation error
- satellite navigation frequency
- satellite navigation industry
- satellite navigation integrity
- satellite navigation interoperability
- satellite navigation message
- satellite navigation receiver
- satellite navigation signal
- satellite navigation signal modulation
- satellite navigation signal simulator
- satellite navigation software receiver
- satellite navigation system
- satellite navigation system coding
- satellite navigation time system
- satellite nebula
- satellite network
- Satellite news gathering
- satellite news gathering equipment
- satellite of Jupiter
- satellite of Mars
- satellite of Neptune
- satellite of Pluto
- satellite of Saturn
- satellite of Uranus
- satellite operating density