短語詞組短語Return n Loss 回波損耗final return of loss 損失確定申報單return wave loss parameter 回波損耗參數(shù)Return -loss 反射損耗;回波損耗return n loss test set 回損測試儀return n loss measuring set 回損測量儀optical return -loss active simulation 光回波損耗有源模擬法balance return loss 平衡返回損耗;回波損耗平衡;均衡回流損失 返回 return loss