“vector projection(of a vector on a vector)”的概念、定义、翻译、参考文献-科学参考

单词	vector projection(of a vector on a vector)
释义	vector projection(of a vector on a vector) Mathematics Given non-zero vectors a and b, let $\vec{O A}$ and $\vec{O B}$ be directed line segments representing a and b, and let θ‎ be the angle between them (θ‎ in radians, with 0 ≤ θ‎ ≤ π‎). Let C be the projection of B on the line OA. The vector projection of b on a is the vector represented by $\vec{O C}$ The vector projection of b on a equals $(\frac{a . b}{a . a}) a .$
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