centre frequency

例句：

1. 1.The device's centre frequency is set at 200 MHz.
   该设备的中心频率设置为200兆赫。
2. 2.The radio waves are travelling at a speed of 3 x 10^8 m/s, which is equivalent to the centre frequency of a microwave oven.
   无线电波以每秒3 x 10^8米的速度传播，相当于微波炉的中心频率。
3. 3. The spectrum analyzer measures the centre frequency and bandwidth of the signal.
   频谱分析仪测量信号的中心频率和带宽。