frustum
名词 n.
英文释义
名词 n.
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A cone or pyramid whose tip has been truncated by a plane parallel to its base.
— In a parabolic conoid this difference vaniſhes, the fruſtum being always equal to a cylinder of the ſame height upon the ſection of the conoid that biſects the altitude of the fruſtum and is parallel to its baſes.
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A portion of a sphere, or in general any solid, delimited by two parallel planes.
— In some women it^([the os uteri]) is flat, in many more tuberose, and forming, as it were, a frustum of a sphere;[…].
词源
Etymology tree
Latin frustumbor.
English frustum
Borrowed from Latin frustum (“morsel”).
Latin frustumbor.
English frustum
Borrowed from Latin frustum (“morsel”).
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数据来源: Wiktionary