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tropical year

/ˈtrɒpɪkəl jɪər/

翻译: 回归年是指太阳连续两次通过春分点所需的时间,约为365.2422天;它是公历中一个历年的基础。

1 个条目

phrase

/ˈtrɒpɪkəl jɪər/C1formalscientific
  • zh回归年是指太阳连续两次通过春分点所需的时间,约为365.2422天;它是公历中一个历年的基础。

The period of time it takes for the Earth to complete one orbit around the Sun relative to the vernal equinox, approximately 365.2422 days, used as the basis for the Gregorian calendar year.

  1. Astronomical time periodC2formal

    The time it takes for the Earth to complete one orbit around the Sun relative to the vernal equinox, approximately 365.2422 days.

    zh天文周期

    • The tropical year is used to define the calendar year.
    • Astronomers measure the tropical year with great precision.
    • The length of the tropical year slowly changes over millennia.