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释义
society > travel > travel by water > vessel, ship, or boat > equipment of vessel > navigational aids > [noun] > depth-finder (7)
depth recorder1911

a device for recording either how far below the surface of the sea it is or the depth of water below a vessel.

depth finder1923

an apparatus for sounding the sea; spec. sonic depth finder one in which the measurement is made by timing the echoes from the sea-bottom of sound…

Fathometer1925

An instrument for the determination of the depth of the sea by measuring the time taken by a sound-wave to reach the bottom and return.

echo-sounder1927

a device used for this purpose.

echometer1937

(See quot. 1842.) Also, a type of echo-sounder.

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更新时间:2024/11/10 21:34:23