| 单词 | frequency |
| 释义 | frequency n. (pl. -ies) 1. commonness of occurrence. 2. a the state of being frequent; frequent occurrence. b the process of being repeated at short intervals. 3. Physics the rate of recurrence of a vibration, oscillation, cycle, etc.; the number of repetitions in a given time, esp. per second. Usage Abbr.: f. 4. Statistics the ratio of the number of actual to possible occurrences of an event. Phrases and idioms frequency band Electronics = BAND(1) 3a. frequency distribution Statistics a measurement of the frequency of occurrence of the values of a variable. frequency modulation Electronics a modulation in which the frequency of the carrier wave is varied. Usage Abbr.: FM. frequency response Electronics the dependence on signal-frequency of the output-input ratio of an amplifier etc. Etymology: L frequentia (as FREQUENT) |
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