principal axes (of a quadric) A set of principal axes of a quadric is a set of axes of a coordinate system in which the quadric has an equation in canonical form.
principal axes
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。