group delay-frequency characteristics

例句：

1. 1.The group delay of the transmission line is a critical factor in determining the performance of the system.
   传输线路的群延迟是决定系统性能的关键因素。
2. 2. The frequency characteristics of the signal were measured to ensure that they met the required specifications.
   信号的频率特性被测量以确保它们符合所需的规格。
3. 3.The group delay and frequency characteristics of the communication channel are crucial for ensuring reliable data transmission.
   通信信道的群延迟和频率特性对于确保可靠数据传输至关重要。