| 单词 | spherical sector |
| 释义 | > as lemmasspherical sector b. sector of a sphere: a solid generated by the revolution of a plane sector about one of its radii. Also spherical sector. ΘΚΠ the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > formed by cutting solid segment of a sphere1570 sector of a sphere1656 frustum1658 truncated cone or pyramid1704 frustulum1785 wedge1883 1656 tr. T. Hobbes Elements Philos. iii. xxiii. 276 The center of Equiponderation of the Sector of a Sphere. 1706 Phillips's New World of Words (new ed.) Sector of a Sphere, is a Conical Solid, whose Vertex or Top ends in the Center of the Sphere, and its Base, or Bottom, is a Segment of the same Sphere. 1840 D. Lardner Treat. Geom. 217 The sector of a sphere consists of a cone and a spherical segment. < as lemmas |
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