echo attenuation measuring set的意思|示意
美 / /
英 / /
回波衰减测量仪
echo attenuation measuring set的网络常见释义
回波衰减测量仪 ... distortion measuring set 失真测定器; 失真测量装置 echo attenuation measuring set 回波衰减测量仪 gain measuring set 增益测量器 ...