The transmission of pings by sonar or similar underwater equipment. Cf. ping, n. 3a.
单词 | θ130027 |
释义 | the mind > attention and judgement > discovery > instrument for detection > [noun] > system investigating sea, atmosphere, etc. > pulse emitted by > production of (1) pinging1955 The transmission of pings by sonar or similar underwater equipment. Cf. ping, n. 3a. |
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