| 单词 | echo sounder |
| 释义 | echo soundernouna navigation and position-finding device that determines depth by measuring the time taken for a pulse of high-frequency sound to reach the sea bed or a submerged object and for the echo to return Derived forms of echo sounderecho sounding, nounWords nearby echo sounderechopathy, echophrasia, echo plate, echopraxia, echo question, echo sounder, echo verse, echovirus, echt, e-cigarette, Eck Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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