| 单词 | sonar |
| 释义 | sonar (once / 19472 pages) n WORD FAMILY sonar: sonars USAGE EXAMPLESA sonar search appears to detect the ‘ping’ of the jet’s black box near the end of its monthlong battery life. Seattle Times(Dec 19, 2016) That’s when crews are expected to finish their deep sea sonar hunt of the current search zone west of Australia in the Indian Ocean. Seattle Times(Dec 19, 2016) “It’s a workboat meant to carry our gear and sonar and be versatile.” Washington Times(Dec 18, 2016) 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 Syn|Hyper asdic, echo sounder measuring device, measuring instrument, measuring system instrument that shows the extent or amount or quantity or degree of something navigational instrumentan instrument used for navigating |
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