“unit vector”的概念、定义、翻译、参考文献-科学参考

单词	unit vector
释义	unit vector Physics A vector that has the magnitude 1. If a is any nonzero vector the unit vector in the direction of a is given by a/\|a\| and is denoted â. Mathematics 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\|. Electronics and Electrical Engineering A vector whose magnitude is exactly one, but whose orientation is arbitrary.
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