“hypocycloid”的英文意思_释义_用法

单词

hypocycloid

释义

hypocycloid Geom.|hɪpəʊ-, haɪpəʊˈsaɪklɔɪd|
[f. hypo- 2 + cycloid. Cf. F. hypocycloïde.]
A curve traced by a point in the circumference of a circle which rolls round the interior circumference of another circle (cf. epicycloid).
1843[see hypotrochoid].1854Moseley Astron. lxi. (ed. 4) 183 This curve..being of the nature of an hypocycloid.1879Thomson & Tait Nat. Phil. I. i. §94 The curve..is called an Epicycloid, or a Hypocycloid, as the rolling circle is without or within the fixed circle.
Hence hypocyˈcloidal a., of the nature or form of a hypocycloid.
1884F. J. Britten Watch & Clockm. 288 The pinion flanks should be hypocycloidal in form.

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