The action or process of sounding or ascertaining the depth of water or of an object below a ship by meauring the time taken for a transmitted…
| 单词 | θ130028 |
| 释义 | the mind > attention and judgement > discovery > instrument for detection > [noun] > location by echo (6) echo-sounding1923 The action or process of sounding or ascertaining the depth of water or of an object below a ship by meauring the time taken for a transmitted… echolocation1944 The location of objects by means of the echo reflected from them by a sound-signal, as of ultrasonic sounds emitted by bats or by man-made devices. Subcategories:— device for (4) |
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