| 单词 | depth recorder |
| 释义 | > as lemmasdepth recorder depth recorder n. a device for recording either how far below the surface of the sea it is or the depth of water below a vessel. ΘΚΠ society > travel > travel by water > vessel, ship, or boat > equipment of vessel > navigational aids > [noun] > depth-finder depth recorder1911 depth finder1923 Fathometer1925 echo-sounder1927 echometer1937 1911 Encycl. Brit. XIX. 295/1 Lord Kelvin's sounding machines..in the later form known as the ‘depth recorder’, where..results are obtained by the automatic record of the position of a piston forced upwards in a tube by..increased pressure. 1961 Listener 24 Aug. 269/1 After the war, echo-sounding and depth-recorders were introduced to fishing boats, and echoes were received of big shoals of fish. < as lemmas |
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