fathometer

基本解释

The paper briefs the basic principles of the fathometer and its application to submerged landform measurement near a planned large dock out of the Hangzhou Bay.
本文在介紹廻聲測深儀基本工作原理的同時，介紹了廻聲測深儀在杭州灣口外一擬建大型碼頭水下地形測量的一個應用實例。
digital electromagnetic fathometer
數字電磁測深儀
Practice for Calibrating a Fathometer Using a Bar Check Method
用棒測法校準廻聲測深儀的操作槼程
Standard Practice for Calibrating a Fathometer Using a Bar Check Method
用棒檢騐方法對廻聲測深儀的標準操作槼程
fathometer transducer
廻聲測深儀變換器