原子钟是目前人类最精确的时间测量仪器，它主要是利用原子不受温度和压力影响的固定频率振荡的原理制成。目前美法两国科学家在研制原子钟方面技术处于领先地位，他们主要通过测量铯原子的振荡来精确测量时间，美法两国都计划将原子钟置于太空零重力环境下，以提高原子钟的精 Atomic clock is currently the most accurate human time measuring instruments, it is mainly based on the principle of atomic frequency and temperature and pressure from the fixed frequency oscillation. At present, scientists from both the United States and France are in a leading position in the development of atomic clocks. They mainly measure the time accurately by measuring the cesium atom oscillation. Both the United States and France plan to place the atomic clock in the space zero gravity environment to improve the atomic clock fineness