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jan 1, 2000 BC - 埃及有十进位记数法，三角形及圆面积、棱锥棱台体积的度量法。中国已会制铜。
Description:
埃及有十进位记数法，三角形及圆面积、棱锥棱台体积的度量法。中国已会制铜。
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鱼
2 May 2023
1
0
386
Date:
jan 1, 2000 BC
Now
~ 4029 years ago
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