supersonic echo sounder 超音波回声测深仪 ; 超声波回声探测仪
echo-sounder 回声探深仪 ; 回声测深仪 ; 潨 ; 测深仪
digital echo sounder 数码回声测深仪 ; 数字测深仪
multistylus echo sounder [水产] 多笔回波探鱼仪
sonic echo sounder 回声测深器 ; 回声测深仪 ; 回声探测器
ultrasonic echo sounder 超声回波测深仪 ; 超声测深装置 ; 超声回波探深器 ; 超声回声测深器
recording echo sounder 自记回声测深仪 ; 自记式回声测深仪 ; 记录式回声测深仪
videograph echo sounder 示像回声测深仪
inverted echo sounder 反向回声测深仪 ; 反回声测深仪
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N a 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 回声测深仪
Use echo sounder frequently when passing shallow water.
通过浅水域时，要常用回声仪测深。
Inspection installation and water tightness transducer of echo sounder on berth.
测深仪换能器船台安装和水密性检查。
The echo sounder is now gradually out of use in navigation, because it has many errors.
回声测深仪在导航仪器中的地位在下降，其原因是它存在着较多的误差。
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