1·It is said the magic cellphone ringtone, with a frequency of above 8000hz, can only be heard by people under the age of 25, whose hearing of high frequency sounds have remained unimpaired.
这种铃声的频率在8000赫兹以上，据说只有25岁以下的人能听到，因为青少年的高频听力还没受损伤。
2·When such fields do not vary with time they are referred to as static and have a frequency of 0 Hz.
当这种磁场不随着时间而发生变化时它们被称为静态，所具有的频率为0赫兹。
3·The response to the control voltage of the VCO core circuit presented here is linear; that is to say, volts/Hz.
目前为止频率对于VCO核心电路的控制电压的应答表现出线性特征，也就是说，瓦特／赫兹。
4·These high frequencies correspond to the rotation speeds of centrifuges; America tightly controls the export of frequency converter drives able to operate at frequencies above 600 Hz.
这些高频率与离心机的转速相对应；美国对能够以600赫兹以上频率运行的频率转换器驱动的出口进行了严格管控。
5·For a labrador retriever, this turns out to be 4.3 Hz.
对于一条拉布拉多寻回犬，结果弄清楚是4.3赫兹。