. "f" . _:b19940 _:b19941 . "Frequency is a measure of the number of occurrences of a repeating event per unit time."@en . . . . "\u9891\u7387"@zh . "\u03BD" . _:b20099 . . "freq" . . _:b20099 . . . . "frequency"@en . _:b20099 . . . _:b19941 . . "frequentie"@nl . . _:b19940 . . . . _:b19941 . _:b19941 . . _:b19940 . . _:b19940 . . . . _:b20099 . . .