约 35,200,000 个结果
在新选项卡中打开链接
  1. Time.is - exact time, any time zone

    3 天之前 · Time.is displays exact, official atomic clock time for any time zone (more than 7 million locations) in 57 languages.

  2. Current International Atomic Time, Time Standard (TAI) …

    2 天之前 · TAI is a highly precise time scale based on atomic clocks around the world. It is the basis for UTC and does not observe DST. See current TAI and its offset from UTC/GMT.

  3. What Is International Atomic Time (TAI)? - timeanddate.com

  4. International Atomic Time - Wikipedia

  5. 国际原子时 - 百度百科

    国际原子(TAI):针对某些元素的原子能级跃迁频率有极高的稳定性,可采用基于铯原子(Cs 132.9)的能级跃迁原子秒作为时标。. TAI是1971年由国际时间局建立,现改为国际计量局(BIPM)的时间部门在维持,根据全球约60个实 …

  6. 國際原子時 - 维基百科,自由的百科全书

  7. Atomic Time | Accuracy, Measurement, Clocks

    Learn about atomic time, the timescale generated by atomic clocks that is more accurate than astronomical means. Find out how International Atomic Time (TAI) and Coordinated Universal Time (UTC) are derived from atomic …

  8. A Brief History of Atomic Time | NIST

  9. How Do Atomic Clocks Work? - NIST

  10. 某些结果已被删除