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-> -> 算式略

《 算式略》[View] [Edit] [History]

1 以地径为一日 径为百零六日距地一万二千月距地三十当月食推地影尖距月若干 远   
2 贵荣
3 答曰八十四 又七分之二
URN: ctp:ws531180

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