attenuation measuring device

例句：

1. 1.The signal strength is attenuating as we move further away from the transmitter.
   随着我们远离发射器，信号强度正在减弱。
2. 2. The attenuation of light waves due to refraction is a fundamental concept in optics.
   光波因折射而衰减是光学中的一个基本概念。
3. 3. The attenuation of radio waves is measured by the loss of power per unit distance.
   无线电波的衰减是通过每单位距离功率损失来衡量的。