_:b19683 . . _:b19682 . _:b19684 . "getal van Strouhal"@nl . _:b19684 . _:b19683 . _:b19682 _:b19683 . _:b19682 . _:b19683 . . _:b19682 . "The Strouhal number is a dimensionless number that describes oscillating flow mechanisms."@en . _:b19684 . . _:b19684 . "Strouhal number"@en . "Sr" .