echo depth sounder

常見例句

雙語例句

• When passing One Fathom Bank, check the depth and variable sand waves below the sea level all the time by echo sounder.
  通過一托淺灘時，要一直測深校時水深及海面下多變的沙紋。
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• Echo Sounder is a kind of acoustic measuring depth equipment, which can measure depth with the time between transmitted wave and echo on condition in which the speed of ultrasonic is fixed.
  回聲測深儀是用來測量水深的一種聲學測量設(shè)備，其以水中超聲波的傳播速度為確定條件，利用發(fā)射波與反射回波時間差來測量水深。
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