这就是众所周知的铯原子钟的基础，它是目前的频率和时间基准。
This is the basis for the well - known cesium clock, presently the standard of frequency and time.
原子频标是空间技术和授时系统的频率与时间基准，直接决定了卫星通信的质量。
Atomic frequency Standard is the frequency and time benchmark of space technology and time awarding system, directly determining the quality of satellite communications.
这些信号分别为模拟回波信号的生成提供了天线增益大小、时间基准、相位基准和载波频率大小等重要的参考信息。
These signals provide an important reference of the gain of antenna, the time reference, the phase reference and the frequency of carrier wave for generating stimulant echo signal.
应用推荐