“mean solar day”的概念、定义、翻译、参考文献-科学参考

单词	mean solar day
释义	mean solar day Encyclopedia 理学分至点释 mean solar day平太阳日平太阳连续两次上中天所经历的时间间隔，是一种天文计时单位。 Astronomy mean solar day平太阳日
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