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《#高丽史51卷-志5-历2》[View] [Edit] [History]
1 | 求日食定用及三限辰刻。 |
2 | ○置日食分秒与二十分相 相乘平方开之。 所得以五千七百四十乘之如入定限行度而一为定用分。 以 食甚定分为初亏加食甚定分为复圆。 依发* 敛求之为日食三限辰刻。 |
URN: ctp:ws866426
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