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单词 prandtl number
释义 prandtl number
\ˈpräntəl\ noun
Usage: usually capitalized P
Etymology: after Ludwig Prandtl died 1953 German physicist; translation of German Prandtlsche zahl
: the ratio of the product of the coefficient of viscosity and the specific heat at constant pressure to the thermal conductivity in fluid flow used especially in the study of heat transfer in mechanical devices
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