单词 | echo sounder |
释义 | echo sounder (once / 909178 pages) n WORD FAMILY echo sounder USAGE EXAMPLESHMS Echo will have a pretty accurate fathometer - an echo sounder - to determine the depth. BBC(Apr 07, 2014) The echo sounder used to locate the bottom of the ocean revealed nothing but more water beneath. The Guardian(Jan 18, 2011) At 12.56pm, the echo sounder quivered and scrawled its first trace as the ocean floor came within reach. The Guardian(Jan 18, 2011) n a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return Syn|Hyper asdic, sonar measuring device, measuring instrument, measuring system instrument that shows the extent or amount or quantity or degree of something navigational instrumentan instrument used for navigating |
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