They differ somewhat from bathymetric charts which are virtually topographic maps of the ocean floor.
它們與水深圖稍有不同,后者實(shí)際上是洋底地形圖.
辭典例句
In bathymetric survey, the recorded seabed is distorted due to the beam - width of the echo sounder.
摘要在海底地形測(cè)量中, 由于波束角效應(yīng)導(dǎo)致探測(cè)的海底地形存在失真.
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