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  1. sidereal

    • IPA[ˌsīˈdirēəl]

    美式

    • adj.
      of or with respect to the distant stars (i.e. the constellations or fixed stars, not the sun or planets).
    • 相關詞
    • n. the time between two consecutive transits of the First Point of Aries. It represents the time taken by the earth to rotate on its axis relative to the stars, and is almost four minutes shorter than the solar day because of the earth's orbital motion.

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    • n. the time between two consecutive transits of the First Point of Aries. It represents the time taken by the earth to rotate on its axis relative to the stars, and is almost four minutes shorter than the solar day because of the earth's orbital motion.

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    • n. time reckoned from the motion of the earth (or a planet) relative to the distant stars (rather than with respect to the sun).

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    • n. the period of revolution of one body around another with respect to the distant stars.

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    • n. the orbital period of the earth around the sun, taking the stars as a reference frame. It is 20 minutes longer than the solar or tropical year because of precession.

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    • n. time reckoned from the motion of the earth (or a planet) relative to the distant stars (rather than with respect to the sun).

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    • n. the orbital period of the earth around the sun, taking the stars as a reference frame. It is 20 minutes longer than the solar or tropical year because of precession.

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    • n. a clock measuring sidereal time in terms of 24 equal divisions of a sidereal day.

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    • IPA[sʌɪˈdɪərɪəl]

    英式

    • adj.
      of or with respect to the distant stars (i.e. the constellations or fixed stars, not the sun or planets).

    Powered by Oxford Dictionary of English 3e

  2. 知識+

    • 怎麼跟外國人解釋農曆阿?

      ... sometimes referred to as lunar year, corresponding to thirteen sidereal months (355.18 days). Examples Most lunar...

    • 英文翻譯 星體運動相關

      此段在闡述「恆星時」的定義,也就是說,同一顆恆星相鄰兩次過中天的時間是一「恆星日」。 ※ 赤經在子午線上也就是「中天」的意思

  1. 贊助