echo-sounding

基本解釋

So was Born the echo-sounding apparatus, now in general use in ships.
這樣廻聲測深儀就誕生了，現(xiàn)已爲(wèi)船衹普遍採用。
So was born the echo-sounding apparatus, now in general use in ships.
這樣就産生了目前各種船舶上普遍應(yīng)用的廻聲探測儀。
new-english.org
Echo-sounding involves the release of highly pressurized air beneath the water to create sound waves.
聲波反射裝置通過釋放水下高壓力的空氣來制造聲波。