noun🔗Share平截头体，锥台。 A cone or pyramid whose tip has been truncated by a plane parallel to its base."The lampshade had the shape of a frustum; it looked like a cone with its top cut off. "那个灯罩的形状是个平截头体，看起来就像一个顶部被切掉的圆锥。mathfigureparttechnicalChat with AIVocabulary GamePractice Reading
noun🔗Share截头体，平截头体。 A portion of a sphere, or in general any solid, delimited by two parallel planes."The art project involved creating sculptures from a clay frustum we formed by slicing off the top and bottom of a clay sphere. "这个艺术项目包括用黏土制作雕塑，我们先用黏土塑造一个球体，然后切掉球体的顶部和底部，形成一个黏土截头体。mathtechnicalfigurespaceChat with AIVocabulary GamePractice Reading
