| 单词 | hour angle |
| 释义 | hour angle in British Englishnoun the angular distance along the celestial equator from the meridian of the observer to the hour circle of a particular celestial body hour angle in American English Astronomy the angle formed at the pole, or its arc on the celestial equator, between the hour circle of a celestial object and the observer'scelestial meridian measured in hours, minutes, etc.: it represents the elapsed time since the object passed directly over the observer |
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