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单词 primo-rational
释义 ˌprimo-ˈrational Math. rare—1.
[f. as prec. + rational, as derivative of prime ratio: see -o suffix1 1 and cf. politico-economic.]
A quantity expressing a prime ratio: see prime a. 10 d.
1862De Morgan in Graves Life Sir W. Hamilton (1889) III. 576, I would rather use primo-rationals than differentials.
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