| 单词 | circumpolar motion |
| 释义 | > as lemmascircumpolar motion 1. Astronomy. Around or about the pole (of the heavens); spec. applied to those stars (or other heavenly bodies) which (in any given latitude) describe the whole of their diurnal circles above the horizon. So circumpolar motion. ΘΚΠ the world > the universe > celestial sphere > [adjective] > pole > around circumpolar1687 1687 Philos. Trans. 1686–7 (Royal Soc.) 16 214 Some Circumpolar Stars in the same Vertical with the Pole-star. 1787 Philos. Trans. (Royal Soc.) 77 166 Observations of the sun and circumpolar stars. 1853 J. F. W. Herschel Pop. Lect. Sci. (1873) iii. 133 The comet remained long..visible as a circumpolar object. 1881 Nature 5 May 13/1 This allows the telescope circumpolar motion. < as lemmas |
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