MHZ

例句：

1. 1. The radio waves are emitted at a frequency of 2.4 gigahertz.
   无线电波以2.4吉赫的频率发射。
2. 2. The new device has a maximum output power of 100 megahertz.
   新设备的最大输出功率为100兆赫。
3. 3. The signal was received at a frequency of 500 megahertz.
   信号以500兆赫的频率接收到。