资料来源 : pyDict

潜艇探索器的一种

资料来源 : WordNet®

asdic
     n : 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
         anti-submarine detection investigation committee [syn: {sonar},
          {echo sounder}]