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单词 promptuary
释义
promptuary
/ ?pr?mptj??r? /
  • 简明释义
  • n.仓库; 经常使用的参考书
  • 英英释义
  • abstract:
    • 1

      The promptuary was a calculating machine invented by the 16th-century Scottish mathematician John Napier and described in the second edition of his book Rabdologiae in which he also described Napier's bones. It performed multidigit multiplication by means of a system of metal plates, inscribed with numbers, that were placed inside a box and turned according to Napier's instructions..

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更新时间:2025/8/1 23:07:57