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.
the singular number
ひにちの数
in a Japanese game called 'go', the number of "go-pieces"