英语词汇“napiers-bones”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	napiers-bones
释义	Trends of Napier's bones View usage for: Napier's bones in British English plural noun a set of graduated rods formerly used for multiplication and division Word origin C17: based on a method invented by John Napier Napier's bones in American English noun (used with a sing. v.) Math a form of multiplication table originally marked on sticks of bone or ivory that could be rearranged to carry out the operations of multiplication or division Also called: Napier's rods Word origin [1650–60; after J. napier, who developed it] Definition of 'Napier's bones'
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Trends ofNapier's bones