网络与数据通信 协议体系与组成结构 释文 protocol models and specification language 协议模型和规约语言
- ultratelescopic meteor
- ultrathin film
- ultra-thin overlay
- ultrathin section
- ultra trace
- ultratrace analysis
- ultravacuum
- ultraviolation
- ultra-violet
- ultraviolet
- ultraviolet absorber
- Ultraviolet absorbing filter
- ultraviolet absorption detector
- ultraviolet absorption spectrum
- ultraviolet and visible spectrophotometer
- ultraviolet astronomy
- Ultraviolet Astronomy Satellite
- ultraviolet attitude detector
- ultraviolet background
- ultraviolet band
- ultraviolet-bright star
- ultraviolet camera
- ultra violet catastrophe
- ultra-violet catastrophe
- ultraviolet catastrophe