因此，时间和时间的相对性可以用任何沙漏、闹钟或原子钟来测量，其中原子钟可测量出十亿分之一秒。
Thus time and time's relativity are measurable by any hourglass, alarm clock, or atomic clock that can measure a billionth of a second.
在分析作者建议的一种新型空间原子钟原型中原子与场作用特点的基础上，探讨几种因素对该原型中原子跃迁频率的影响及相应的减少频移措施。
The resonance frequency shift in the space atomic clock prototype is analyzed in the paper. The preliminary results show that a higher accuracy is obtainable in the proposed new prototype.
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