“normal reaction”的概念、定义、翻译、参考文献-科学参考

单词	normal reaction
释义	normal reaction [`nȯr·mǝl rē`ak·shǝn] ^MECHANICS The force exerted by a surface on an object in contact with it which prevents the object from passing through the surface; the force is perpendicular to the surface, and is the only force that the surface exerts on the object in the absence of frictional forces.
随便看	Pristiophoridae privacy system privacy transformation private aid to navigation private automatic branch exchange private automatic exchange private branch exchange private branch exchange access line private data private exchange private library private line private line arrangement private line service private pack private stream privileged direction privileged instruction privileged mode proaccelerin proamnion Proanura probabilistic automaton probabilistic sampling probabilistic sequential machine

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