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jan 1, 2100 BC - 美索不达米亚人有乘法表，使用60进位制。将五个行星从恒星中划出。
Description:
公元前2100年前后美索不达米亚人有乘法表，使用60进位制。将五个行星从恒星中划出。
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鱼
2 May 2023
1
0
386
Date:
jan 1, 2100 BC
Now
~ 4129 years ago
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