短語詞組短語sonic echo -sounder 聲波廻聲測深儀inverted echo -sounder 倒置廻聲測聲儀digital echo -sounder 數(shù)字顯示式廻聲測聲儀Echo -sounder instrumental errors 儀器digital ultrasonic echo -sounder 數(shù)字超聲波測深儀multi -beam echo-sounder 多束測深儀eccentric wheel echo -sounder eddy 漩渦Single -beam Echo Sounder 單音束測深系統(tǒng)wide -beam echo sounder 寬束廻聲測聲儀 返回 echo-sounder