更多hydrographic例句

1. Hydrographic surveys and drawing beach charts were a snap in comparison.
2. A hydrographic survey of the State was authorized by the Legislature as early as 1867.
3. To establish this fact will be to solve the last problem of the hydrographic system of Africa.
4. The water was about three hundred feet deep here, the Hydrographic Office charts showed.
5. Our hydrographic engineers contribute also to the common achievement a glorious contingent.
6. No country in the world can boast of such an efficient Hydrographic Department as our own.