Difference between revisions of "Sidereal year"
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Latest revision as of 17:22, 10 February 2006
태양이 1개의 항서과 동일한 황경을 잇달아 2회 통과하는데 필요한 시간을 가르킴
- This page was last edited on 10 February 2006, at 17:22.
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