sonar

名词 n.
/ˈsəʊ.nɑː/    /ˈsoʊ.nɑːɹ/

英文释义

名词 n.
  1. Artificial echolocation by use of electronic equipment, with hydrophones to locate objects underwater, using the same wave-analysis principles that radar uses. uncountable,usually
    — They were able to detect the sunken wreck using sonar.
  2. A device that provides such echolocation. countable
    — They finally bought a new sonar to replace the 40-year-old unit that sometimes didn't work right.
  3. Any echolocation. broadly,countable,uncountable
    — Submarines and bats both use sonar to navigate.

词形变化

sonars plural SONAR alternative

词源

By anacronymic evolution from SONAR.
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