spec. Astronomy circle of altitude n. a small circle parallel to the horizon, having its pole in the zenith; an almacantar. circle of curvature n.…
单词 | θ45 |
释义 | the world > the universe > celestial sphere > circle of celestial sphere > [noun] > great circle > hour circle > declination circle (1) circle of declination1594 spec. Astronomy circle of altitude n. a small circle parallel to the horizon, having its pole in the zenith; an almacantar. circle of curvature n.… |
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