| 释义 |
frustum/ˈfrʌstəm/n. (pl. frusta /-tə/ or frustums) Geom. 【几】 1 the remainder of a cone or pyramid whose upper part has been cut off by a plane parallel to its base 截头(锥)体(圆锥体或棱锥体被一个与其底面平行的平面截去顶部后的剩余部分) 2 the part of a cone or pyramid intercepted between two planes 截头(锥)体(两个平面间截取的圆锥体或棱锥体的一部分)[Latin, = piece cut off] |