| 单词 | Napier's Bones |
| 释义 | Napier's BonesNumbered rods which can be used to perform Multiplication. This process is also called Rabdology. See also Genaille Rods
Gardner, M. ``Napier's Bones.'' Ch. 7 in Knotted Doughnuts and Other Mathematical Entertainments. New York: W. H. Freeman, 1986. Pappas, T. ``Napier's Bones.'' The Joy of Mathematics. San Carlos, CA: Wide World Publ./Tetra, pp. 64-65, 1989. |
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