The rate at which pulses can be sent and received on copper wires is called frequency . 脉冲通过铜线送出和接收的速度称为频率。
This rate is called frequency and is measured in hertz3 , or vibrations per second 这种速率叫做频率,计算单位为赫兹(每秒钟振动频率) 。
The digital tester for frequency response characteristic , which is also called frequency - sweeping instrument , plays a very important role in modern electronic measurement 扫频仪也称频率特性测试仪,用于测试网络的幅频特性和相频特性,在现代电子测量中占有重要的位置。