高频
related to waves, such as sound or radio waves
与波有关，如声波或无线电波
低频
related to waves, such as sound or radio waves
与波有关，如声波或无线电波
不断增加的频率
describes a rate that is currently rising
描述一个正在上升的比率
增加的频率
describes a rate that has become higher
描述一个已经变高的比率
降低的频率
describes a rate that has become lower
描述一个已经变低的比率
不同的频率
about the rate of occurrence
关于发生率
相同的频率
about the rate of occurrence
关于发生率
射频
related to radio waves used for communication
与用于通信的无线电波有关
相似的频率
about the rate of occurrence
关于发生率
相对频率
the rate of occurrence in relation to another
与另一个相比的发生率
预期频率
refers to the rate at which something is anticipated or predicted to happen
指某事被预期或预测发生的比率
惊人的频率
a rate of occurrence that is worryingly high
一个高得令人担忧的发生率
refers to the rate at which something is calculated or guessed to happen
信号频率
the frequency of an electrical or electromagnetic signal
电信号或电磁信号的频率
高频率
describes a high rate of occurrence
描述高的发生率
波频
the number of waves that pass a point in a certain time
在一定时间内通过某一点的波数
振动频率
the rate at which something vibrates
振动发生的速率
微波频率
related to microwave radiation waves
电磁频谱中微波范围内的频率。