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单词 Chapman equation
释义 Chapman equation
[`chap·mǝn i´kwā·zhǝn]
GEOPHYSICS
A theoretical relation describing the distribution of electron density with height in the upper atmosphere.
STATISTICAL MECHANICS
The relationship that the viscosity of a gas equals (0.499)mv / [√2 πσ2 (1 + C / T )], where m is the mass of a molecule, v its average speed, σ its collision diameter, C the Sutherland constant, and T the absolute temperature (Kelvin scale).
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