出典:Wikipedia
出典:『Wikipedia』 (2011/07/22 15:48 UTC 版)
In fluid mechanics, the Reynolds number Re is a dimensionless number that gives a measure of the ratio of inertial forces to viscous forces and consequently quantifies the relative importance of these two types of forces for given flow conditions.
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the singular number
ひにちの数
in a Japanese game called 'go', the number of "go-pieces"