echo return loss

• 回波损耗

echo return loss的用法和样例：

例句

1. This paper presents the principle and method for measuring various microwave devices return loss by spectrum analyzer and analyses the uncertainty of measurement.
   介绍了频谱分析仪测量各种微波器件回波损耗的原理和方法，并对测量结果的不确定度进行了分析。