midband

例句：

1. 1. The midband frequencies are where most of the energy is concentrated.
   中波段频率是能量集中的地方。
2. 2. The radio station broadcasts in the midband range.
   该广播电台在中波段范围内广播。
3. 3. The midband spectrum is used for transmitting signals over long distances.
   中波段谱用于长距离信号传输。