Napier's bones
短语[网络] 纳皮尔算筹；纳皮尔骨头；纳皮尔的骨头
词形变化
only
复数
别名
Napier's rods
释义与例句
n.
-
1.
A set of numbered rods used for multiplication and division (see the Wikipedia article for a fuller explanation).
仅复数