“Knudsen cosine law”的概念、定义、翻译、参考文献-科学参考

单词	Knudsen cosine law
释义	Knudsen cosine law [kǝ`nüd·sǝn `kō´sīn ´lȯ] ^PHYSICS A law which states that the probability of a gas molecule leaving a solid surface in a given direction within a solid angle dω is proportional to cos θ dω, where θ is the angle between the direction and the normal to the surface.
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