单词 | parabolic conoid |
释义 | > as lemmasparabolic conoid ΘΚΠ the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > solid of revolution > formed from curve conoida1664 paraboloid1677 parabolic conoid1702 spindle1706 hyperboloid1743 1702 J. Raphson Math. Dict. Paraboloid... This is otherwise called a Parabolick Conoid. 1807 C. Hutton Course Math. (ed. 5) II. 274 A diving bell, of the form of a parabolic conoid. 1872–3 Chambers's Encycl. 125/2 The spherical reflector occupies the place of the parabolic conoid which has been cut off behind the parameter. < as lemmas |
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