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equinoctial year

/ˌiːkwɪˈnɒkʃəl jɪər/

翻译: 指太阳连续两次通过春分点所需的时间,即回归年,又称太阳年。

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/ˌiːkwɪˈnɒkʃəl jɪər/C2formalscientific已废弃
  • zh指太阳连续两次通过春分点所需的时间,即回归年,又称太阳年。

An outdated astronomical term referring to the time it takes for the Sun to return to the same equinox position, also known as the tropical year.

  1. Tropical yearC2formal

    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.

    zh回归年

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