1. 时角[天]：hot-wire anemometer 热线测速仪 | hour angle 时角[天] | humidity 湿度
2. 时角,子午圈角：hour ==> 时 | hour angle ==> 时角,子午圈角 | hour angle difference ==> 子午圈角差,时角差
noun
1. the angular distance along the celestial equator from the observer's meridian to the hour circle of a given celestial body
2. (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing
the right ascension for an observer at a particular location and time of day
Synonym: HA