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Napier's bones

  • 纳皮尔的骨头

网络释义英英释义

短语

napier's bones 纳皮尔的骨头 ; 纳皮尔算筹

Napier's bones

  • abstract: Napier's bones is an abacus created by John Napier of Merchiston for calculation of products and quotients of numbers. The method was based on Arab mathematics and the lattice multiplication used by Matrakci Nasuh in the Umdet-ul Hisab and Fibonacci's work in his Liber Abaci.

以上来源于: WordNet

 柯林斯英汉双解大词典 

Napier's bones

  • 1. 

    N-PLURAL a set of graduated rods formerly used for multiplication and division 纳皮尔乘除器

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