They differ somewhat from bathymetric charts which are virtually topographic maps of the ocean floor .
们与水深图稍有不同，后者实际上是洋底地形图。
Precise bathymetric charts and sea floor vegetation distributions can be generated for optically shallow waters .
在浅水水域，用光学仪器可以进行精确的海底地形图绘制和海底植被分布。
Upon acceptance , the contractor shall submit two digital copies in autocad or equivalent approved one full-size original copy and six printed copies of the relevant as-built drawings , bathymetric and topographic surveys to the engineer .
This paper introduces the research on supervision technology of bathymetric survey , which has been applied successfully to the acceptance survey of dredging project .
介绍水深测量监理技术方面的研究及相应技术在疏浚工程验收测量中的成功应用。
The west mata volcano , circled on this bathymetric map of the region showing a three-dimensional view of the ocean floor , is not the largest volcano in the lau basin , but it is one of the most geologically active .
