narrow-band width

例句：

1. 1.The radio signal is emitted from a narrow-band antenna.
   无线电信号从窄带天线发出。
2. 2.The narrow-band filter is used to enhance the signal quality.
   窄带滤波器用于提高信号质量。
3. 3.In this experiment, we need to ensure that the narrow-band width is within the acceptable range.
   在这个实验中，我们需要确保窄带宽度在可接受范围内。