has dimension has unit 単位を持つ has value 値を持つ frequency frequentie 频率 Frequency is a measure of the number of occurrences of a repeating event per unit time. ν freq f frequency unit quantity 量 attohertz attohertz centihertz centihertz decahertz decahertz decihertz decihertz exahertz exahertz femtohertz femtohertz frequency dimension gigahertz gigahertz hectohertz hectohertz hertz hertz 赫兹 kilohertz kilohertz megahertz megahertz microhertz microhertz millihertz millihertz nanohertz nanohertz petahertz petahertz picohertz picohertz reciprocal day omgekeerde dag reciprocal hour omgekeerd uur reciprocal minute omgekeerde minuut reciprocal second omgekeerde seconde reciprocal year omgekeerd jaar terahertz terahertz