“passive sonar”的概念、定义、翻译、参考文献-科学参考

单词	passive sonar
释义	passive sonar [`pas·iv `sō´när] ^ENGINEERING Sonar that uses only underwater listening equipment, with no transmission of location-revealing pulses.
随便看	underwing Underwood chart Underwood distillation method undetected error rate undetermined multipliers undistorted wave undisturbed undisturbed motion undisturbed-one output undisturbed-zero output undoing undulant fever undulating light undulator undulatory extinction undulatus unexploded ordnance unfavorable current unfavorable winds unfinished bolt unfinished fabric unfired pressure vessel unfired tube unformatted file unfreezing

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