Việt
máy đo sâu hồi âm
Anh
echo sounding instrument
measure
measurement instrument
measurer
measuring apparatus
measuring device
Đức
Akustisches Lotgeraet
Pháp
sondeur acoustique
echo sounding instrument, measure, measurement instrument, measurer, measuring apparatus, measuring device
echo sounding instrument /SCIENCE/
[DE] Akustisches Lotgeraet
[EN] echo sounding instrument
[FR] sondeur acoustique