| 单词 | equation of time |
| 释义 | equation of time [i`kwā·zhǝn ǝv `tīm] ASTRONOMY The addition of a quantity to mean solar time to obtain apparent solar time; formerly, when apparent solar time was in common use, the opposite convention was used; apparent solar time has annual variation as a result of the sun's inclination in the ecliptic and the eccentricity of the earth's elliptical orbit. |
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