回声测深声纳
echo depth sounding sonar
磁致伸缩回声测深器
magneto striction echo sounder
回声测深
echo deep sounding
ES
echo depth sounding
echo-fathom
echo sounding
acoustic sounding
acousticsounding
acoustical depth sounding
回声测深仪
echo depth sounding sonar
fathometer
ESD
echo sounder
sonic echo depth finder
echo-sounding instrument
echo sounding machine
echo depth sounder
acousticsounder
acoustic dapth finder
Acoustic sounder
Echo soundez
acoustic depth finder
echo (depth) sounder
echometer
sonic sounder
echo fathometer
echo-sounder
echoscope
sonic depth finder
兰格文回声测深仪
Langevin echo sounding machine