Any great circle of the celestial sphere passing through the poles; a meridian or declination-circle. Twenty-four of these are commonly marked on the…
| 单词 | θ41 |
| 释义 | the world > the universe > celestial sphere > circle of celestial sphere > [noun] > great circle > hour circle (9) hour-circle1690 Any great circle of the celestial sphere passing through the poles; a meridian or declination-circle. Twenty-four of these are commonly marked on the… Subcategories:— meridian (5) — declination circle (1) — circle of position (2) |
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