channel distortion

例句：

1. 1.The radio station's signal is severely affected by the nearby power line.
   该电台的信号严重受到附近的电线干扰。
2. 2. The engineer used a special filter to reduce channel distortion.
   工程师使用特殊的滤波器来减少频道失真。
3. 3. During the test, we noticed that some channels had noticeable distortion.
   测试期间，我们注意到有些频道有明显的失真。