unit vector A vector with magnitude, or length, equal to 1. For any non-zero vector a, a unit vector in the direction of a is a/|a|.
unit vector
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。