frequency

• 名词，指某事发生的速率或在一定时间内重复的次数，也指波或振动在单位时间内的周期数。

A noun referring to the rate at which something occurs or is repeated over a particular period of time, or the number of cycles per unit time in a wave or oscillation.

1. Rate of occurrenceB1formal

   The number of times something happens within a specific period.

   频率

   • The frequency of earthquakes in this region is increasing.
   • We measured the frequency of customer complaints.
   • The doctor asked about the frequency of his headaches.

   同义词commonnessincidenceoccurrenceprevalencerateregularity

   反义词infrequencyrarity

2. Physics: wave cyclesB2formalscientific

   The number of cycles per second of a wave, measured in hertz.

   频率

   • Radio waves have a specific frequency for transmission.
   • The frequency of sound determines its pitch.
   • Scientists adjusted the frequency of the signal.

3. Statistics: data distributionB2formalscientific

   The number of times a particular value appears in a dataset.

   频数

   • The frequency table shows how often each score occurred.
   • We calculated the relative frequency of each category.
   • High frequency data points are plotted on the graph.

   同义词countincidenceoccurrencetally