directional attenuator

例句：

1. 1. The directional attenuator in the router helps to control the signal strength.
   路由器中的定向衰减器有助于控制信号强度。
2. 2. In the field of radio engineering, directional attenuators are used to enhance the signal quality.
   在无线电工程领域，定向衰减器被用来提高信号质量。
3. 3. The directional attenuator was designed to reduce interference and improve signal clarity.
   定向衰减器的设计是为了减少干扰并提高信号清晰度。