local frequency

例句：

1. 1.In the study of wireless communication, local frequency modulation is a key technology.
   在无线通信研究中，局部频率调制是一项关键技术。
2. 2.The local frequency distribution of the signal is crucial for understanding its propagation characteristics.
   信号的局部频率分布对于理解其传播特性至关重要。
3. 3.The engineers used a local frequency to tune the antenna and improve its performance.
   工程师们使用了一个局部频率来调谐天线并提高其性能。