| 单词 | hour-angle |
| 释义 | > as lemmashour-angle hour-angle n. Astronomy the angular distance between the meridian and the declination-circle passing through a heavenly body, which is the measure of the sidereal time elapsed since its culmination. ΘΚΠ the world > the universe > heavenly body > position of heavenly body > [noun] > other declinationc1400 meridian altitudec1400 angle of position?a1560 zenith distance1588 refraction1603 azimuth1626 amplitude1627 horizontal parallax1665 complement1703 aberration1737 hour-angle1837 intercept1901 1837 Penny Cycl. IX. 488 The difference between the observed hour angle and true hour angle. < as lemmas |
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