| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024so•nar /ˈsoʊnɑr/USA pronunciation n. - Nautical, Naval Terms a method for locating underwater objects by sending out sound waves that reflect off an object and bounce back to the sensing device:[uncountable]They located the enemy submarine by sonar.
- Nautical, Naval Terms the apparatus used in sonar:[countable]Are the Russian sonars as good as ours?
See -son-. WordReference Random House Unabridged Dictionary of American English © 2024so•nar (sō′när),USA pronunciation n. - Nautical, Naval Termsa method for detecting and locating objects submerged in water by echolocation.
- Nautical, Naval Termsthe apparatus used in sonar. Also called,[Brit.,] asdic.
- so(und) na(vigation) r(anging) 1940–45
Collins Concise English Dictionary © HarperCollins Publishers:: sonar /ˈsəʊnɑː/ n - a communication and position-finding device used in underwater navigation and target detection using echolocation
Etymology: 20th Century: from so(und) na(vigation and) r(anging) |