“angle of impact”的概念、定义、翻译、参考文献-科学参考

单词	angle of impact
释义	angle of impact [`aŋ·gǝl ǝv `im´pakt] ^MECHANICS The acute angle between the tangent to the trajectory at the point of impact of a projectile and the plane tangent to the surface of the ground or target at the point of impact.
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