名词
中文翻译：导航回声测深仪同义词
同义词：
['echo sounder', 'echo sounding device', 'echo sounding apparatus']
例句：
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1. The navigation echo sounder is used to determine the depth of the seabed.
导航回声测深仪用于确定海底深度。
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2. The echo sounder was used to map the underwater terrain.
回声测深仪被用来绘制水下地形图。
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3. The navigation echo sounder helped us locate the lost ship.
导航回声测深仪帮助我们找到了失踪的船只。