| 词汇 | frustum |
| 释义 | frustum noun[ C ] uk /ˈfrʌs.təm/ us /ˈfrʌs.təm/frustauk /ˈfrʌs.tə/ us /ˈfrʌs.tə/frustums mathematics specialized the part of a solid shape such as a cone that is between the base of the shape and a parallel plane through the shape or between two parallel planes through the shape平截头体，截头锥体 Geometry: parts of geometrical shapes -sided angle axis axisymmetric bulky chord circumference conic corresponding sides hemisphere node perimeter plane pole quadrant quadric symmetrical symmetrically ultra-dense vertex Reinforces made the gun look like "three frustums of cones joined together, so as the lesser base of the former is always greater than the greatest of the succeeding one." The form of the stand is the frustum of a hexagonal pyramid reversed, about six or eight inches in diameter. The plummet, shaped like the frustum of a cone, and weighing thirty pounds, was thrown out from the side in the line of the vessel's drift. Examples of frustumfrustum The ellipsoid volume was derived from length and diameter measurements at several points by approximating the cone ellipsoid as the sum of frustums. Cone ellipsoid volume was approximated as a sum of frustums from length and diameter measurements at several points along the ellipsoid. Some authors use "pyramid of vision" as a synonym for view frustum itself, i.e. consider it truncated. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. View frustum culling is the process of removing objects that lie completely outside the viewing frustum from the rendering process. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In ray tracing, bounding volumes are used in ray-intersection tests, and in many rendering algorithms, they are used for viewing frustum tests. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Other bases may be used, such as an octagon, or a frustum with star section shape more common to pandoro. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The main crossing towers are 158 m tall with one crossarm atop a frustum framework construction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The tower is formed as a frustum of a cone. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He gave the derivation of the volume of a frustum by a sort of infinite procedure. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The perspective viewing volume is a frustum, that is, a truncated pyramid. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The angle of the wings on the anchor allow for increase of frustum pressure on the soil. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It can be thought of as a spherical cap with the top truncated, and so it corresponds to a spherical frustum. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Each is a hollow mast resembling a truncated cone (or frustum). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The planes that cut the frustum perpendicular to the viewing direction are called the "near plane" and the "far plane". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Problems 10 and 14 compute a surface area and the volume of a frustum respectively. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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