section The plane figure obtained when a surface or solid is intersected by a plane. If the figure has an axis of symmetry and the plane is perpendicular to the axis, then it is a cross section. The sections of a (double) cone are the conics.
section
数学辞典收录了4151条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。