Noun:

1. a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed

FRabbr.故障率（=failure rate）abbr.故障记录（=faillure record）abbr.故障报告（=failure report）FRBSn.联邦储备银行系统

frustum of a cone截头圆锥体,平截圆锥体

frustum of parabola抛物线截角锥体

frustum of pyramid平截头棱锥体,截棱锥

frustum of wedge尖劈截角锥体

frustum of cone平截头圆锥体

frustum body平截头体

frustum of sphere球截角锥体

frustum cylinder截锥圆柱体