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jan 1, 100 BC - 【西汉初期】《周髀算经》

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【西汉初期】成书，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

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

29 Sep 2024

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Date:

jan 1, 100 BC

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~ 2127 years ago

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