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echolood n
gen.	sounder
meas.inst.	acoustic depth finder; sonic depth finder
nat.sc.	echo-sounder; echosounding equipment
phys.sc.	acoustic sounder; echo depth finder; echo sounder; fathometer
echoloden n
meas.inst.	echo depth-sounding; echo sounding

echolood: 3 phrases in 1 subject

Acoustics

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