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单词 suanpan
释义
suanpan
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  • 英英释义
  • abstract:
    • 1

      The Suan Pan () is an abacus of Chinese origin first described in a 190 CE book of the Eastern Han Dynasty, namely Supplementary Notes on the Art of Figures written by Xu Yue. However, the exact design of this suanpan is not known.

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更新时间:2025/2/11 18:57:30