envelope delay distortion meter

例句：

1. 1. The envelope delay distortion meter is used to measure the delay in the transmission of signals between two points.
   信封延迟失真计用于测量信号在两点之间的传输延迟。
2. 2. The envelope delay distortion meter was used to test the reliability of the communication system.
   信封延迟失真计被用来测试通信系统的可靠性。
3. 3. The envelope delay distortion meter was used to measure the delay in the transmission of signals between two points.
   信封延迟失真计被用来测量信号在两点之间的传输延迟。