VHF

例句：

1. 1. VHF stands for Very High Frequency, which is a type of radio frequency.
   VHF代表非常高频，是一种无线电频率。
2. 2. In the aviation industry, VHF is used to communicate between aircraft in flight.
   在航空业中，VHF用于飞机飞行中的通信。
3. 3.The VHF channel is used for emergency communication during emergencies.
   VHF频道用于紧急情况下的通信。