frustum
A cone or pyramid whose tip has been truncated by a plane parallel to its base. / A portion of a sphere, or in general any solid, delimited by two parallel planes.
present participle of break off
(intransitive, often with into or through) To force oneself (in a particular direction). / (agriculture, intransitive, of a cow or heifer) To be in heat; to be ready for mating with a bull.
(philosophy) The doctrine that physical objects exist only as perceptual phenomena or sensory stimuli
技師は図面の寸法と一致するかどうかを確認するために金属の円錐台を調べた。
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