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-> -> #高麗史51卷-志5-歷2

《#高麗史51卷-志5-歷2》[View] [Edit] [History]

1 求昏明五更中星。
2 ○置距中度以其日午中赤道日度加而命之卽昏中星所臨宿次命為初更中星。 以更差度累加之滿赤道宿次去之為逐更及曉中星宿度及分秒。 其九服所在晝夜刻分及中星諸率 准隨處北極出地度數推之。已上諸率與晷漏所推自相符契。
URN: ctp:ws981543

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