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单词 herpolhode
释义 herpolhode Geom.|ˈhɜːpəlhəʊd|
[f. Gr. ἑρπ-ειν to creep + πόλος pole + ὁδός way, path.]
A plane curve described by the point of contact of an ellipsoid with a fixed plane, the centre of the ellipsoid being fixed while the ellipsoid rolls upon the plane.
1868E. J. Routh Rigid Dynam. 329 The point of contact of the ellipsoid with the plane on which it rolls traces out two curves, one on the surface of the ellipsoid, and one on the plane..the second..is called the herpolhode.
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更新时间:2024/11/8 23:31:02