A short pulse of high-pitched, usually ultrasonic sound, as transmitted (or received back) by a sonar transducer; (also) an audible signal by…
单词 | θ130026 |
释义 | the mind > attention and judgement > discovery > instrument for detection > [noun] > system investigating sea, atmosphere, etc. > pulse emitted by (2) ping1943 A short pulse of high-pitched, usually ultrasonic sound, as transmitted (or received back) by a sonar transducer; (also) an audible signal by… Subcategories:— production of (1) |
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