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单词 sonar
释义 sonar
[`sō´när]
ENGINEERING
1. A system that uses underwater sound, at sonic or ultrasonic frequencies, to detect and locate objects in the sea, or for communication; the commonest type is echo-ranging sonar; other versions are passive sonar, scanning sonar, and searchlight sonar.Derived from sound navigation and ranging.
2. See <<sonar set>>
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