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单词 spherical sector
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spherical sector
b. sector of a sphere: a solid generated by the revolution of a plane sector about one of its radii. Also spherical sector.
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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.
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更新时间:2024/12/23 23:36:21