未来重新定义SI时间单位的可能方法
On possible ways for future redefinition of the SI time unit
摘要：
考虑了目前通过铯133原子基态两能级间超精细跃迁频率实现二阶精度最高的方法。它讨论了未来重新定义SI时间单位的光学频率标准的帮助下，以及钍和超高频标准的可能途径。分析了时间、质量和电流单位定义中的几个常数。
英文摘要：
The current methods for realization of the second with the highest accuracy through the frequency of the hyperfine transition between two levels of the ground state of the cesium 133 atom are considered. It is discussed possible ways for the future redefinition of the SI time unit with the help of optical frequency standards, as well as thorium and super-high frequency standards. Several constants which can be also used for definitions of the time, mass and electric current units are analyzed.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
