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jan 1, 1086 - 【北宋】 沈括《梦溪笔谈》

Description:

#∈[1086，1093]

记载和总结了当时的许多科技成果

Added to timeline:

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

ByGUZI
8 months ago
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3489

Date:

jan 1, 1086
Now
~ 940 years ago
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