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1 jan 100 ano antes da era comum - 记载了用竿标测日影以求日高的方法， 最早引用了【西周初年】勾股定理的特例商高定理

Adicionado na linha do tempo:

人教版高中历史|Chinese students' PEP SENIOR HIGH HISTORY TEXTBOOKS

ByGUZI
8 meses atrás
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3489

Data:

1 jan 100 ano antes da era comum
Agora
~ 2126 years ago
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