“angle(between vectors)”的概念、定义、翻译、参考文献-科学参考

单词	angle(between vectors)
释义	angle(between vectors) Mathematics Given non-zero vectors a and b, let $\vec{O A}$ and $\vec{O B}$ be directed line segments representing a and b. Then the angle θ‎ between the vectors a and b is the angle ∠AOB, where θ‎ is taken to satisfy 0 ≤ θ‎ ≤ π‎ (θ‎ in radians), or 0 ≤ θ‎ ≤ 180 (θ‎ in degrees). It can be expressed in terms of the scalar product by $cos θ = \frac{a \cdot b}{\| a \| \| b \|} .$
随便看	substance P substantive dye substantivity substation substellar object substellar point substituent substitute substituted mechanism substitute natural gas substitution substitutional quantification substitution cipher substitution effect substitution group substitution((in genetics)) substitution reaction substitutivity salva veritate substorm job scheduling job search jobseeker’s allowance Jobs, Steve (1955–2011) job step job stream

科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。