在海洋测深过程中，回声测深仪波束角效应使记录的测深图像失真。

In bathymetric survey, the record seabed image is distorted due to the angular beam width of an echo sounder.

youdao

2001年1月3日当拖运还在进行且失事船舶始终保持向左舷倾侧时，所有的压载舱都进行了测深和记录。

Whilst the tow was underway on 3 January, 2001 and still listing to port, all the ballast tanks were sounded and recorded.

youdao

2001年1月3日当拖运还在进行且失事船舶始终保持向左舷倾侧时，所有的压载舱都进行了测深和记录。

Whilst the tow was underway on 3 January, 2001 and still listing to port, all the ballast tanks were sounded and recorded.

youdao