sidereal day

n. 恒星日(较标准日约短四分钟)

ph.

恒星日

sidereal day

同义词：

反义词：

civil |

sidereal day1.■【天文学】恒星日

1. (Astronomy)the time between two consecutive transits of the First Point of Aries. It represents the time taken by the earth to rotate on its axis relative to the stars, and is almost four minutes shorter than the solar day because of the earth's orbital motion
   (天文)恒星日
   

sidereal day

名词 sidereal day:

the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day

同义词：day

sidereal day