名词
中文翻译：脉冲调制声纳
同义词：
['pulsed sonar', 'pulse-coded sonar']
例句：
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1.The new sonar system uses pulse-modulated technology to detect underwater objects.
新的声纳系统使用了脉冲调制技术来探测水下物体。
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2. The sonar operator monitored the data from the pulse-modulated sonar during the search.
声纳操作员在搜索期间监测了脉冲调制声纳的数据。
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3. The sonar was used to map out the depth and structure of the ocean floor.
声纳被用来绘制海洋底部的深度和结构图。