Sonar Equipment Sound Noun Ship Position Underwater ˈsəʊnɑː(R
The word 'sonar' refers to a system or equipment, typically ship-based, that uses sound waves to measure the depth of the sea or locate underwater objects.
[N-VAR 可变名词]声呐(一种利用声波测量水深或水下物体位置的船载装置)Sonar is equipment on a ship which can calculate the depth of the sea or the position of an underwater object using sound waves.
Oxford
sonar/ˈsəʊnɑː(r); NAmEˈsoʊnɑːr/noun[uncountable ]equipment or a system for finding objects underwater using sound waves 声纳(利用声波探测水下物体的装置或系统)☞compare