Luo Xiahong was the initiator of the theory of sphere-heavens, and the equatorial armillary sphere he improved was in use for 2 000 years.

  • 落下闳是浑天说的创始人之一,经他改进的赤道式浑天仪,在中国用了2000年。

  • 互联网摘选 2025-01-19 23:45:19

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