中文翻译与英英解释 | 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; "sonar is an acronym for sound navigation ranging"; "asdic is an acronym for antisubmarine detection investigation committee"
同义词：sonar, echo sounder,
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例句与用法 | 1. | Variable depth asdic
可变深度声纳
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