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中国祖冲之计算π值精确到第七位有效数字。 (jan 18, 401 – dec 1, 500 BC)

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5世纪中国祖冲之计算π值精确到第七位有效数字。

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2 May 2023

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jan 18, 401

dec 1, 500 BC

~ 902 years

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