“Knudsen's equation”的概念、定义、翻译、参考文献-科学参考

单词	Knudsen's equation
释义	Knudsen's equation [kǝ`nüd·sǝnz i´kwā·shǝn] ^PHYSICS An equation for the amount of gas that flows through a tube in free molecule flow, q√(2π)Δpd³/ 6l √ρ, where q is the volume of gas measured at unit pressure that flows through the tube per second, Δp is the difference between the pressures at the ends of the tube, d is the inside diameter of the tube, l is the length of the tube, and ρ is the density of the gas at unit pressure.
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