group delay frequency characteristic

例句：

1. 1. The group delay in the transmission line is an important factor affecting the system performance.
   传输线上的群延迟是影响系统性能的一个重要因素。
2. 2. In order to improve the communication quality, we need to study the group delay frequency characteristic of thewireless communication system.
   为了提高通信质量，我们需要研究无线通信系统的群延迟频率特性。
3. 3. The group delay frequency characteristic is closely related to the propagation characteristics of the radio wave.
   群延迟频率特性与无线电波的传播特性密切相关。