"echo sounder"@en-us . . . "0.0893259"^^ . "0"^^ . . "04259771-n"^^ . "0.0011759"^^ . "0.028849"^^ . "0.0113308"^^ . . . . . . . . "a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return; \"sonar is an acronym for sound navigation ranging\"; \"asdic is an acronym for antisubmarine detection investigation committee\""@en-us . . "sonar"@en-us . "104259771"^^ . "sonar"^^ . "104096664"@en-us . . . "0.399854"^^ . . . "a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return; \"sonar is an acronym for sound navigation ranging\"; \"asdic is an acronym for antisubmarine detection investigation committee\""@en-us . "0.0490143"^^ . "0.11558"^^ . "asdic"@en-us . "0"^^ . "0.304871"^^ . .