您要查找的是不是：
- 海底seabed
- 海底世界sea floor world
- 海底DEMundersea DEM
- 海底的benthal
- DEMdigital elevation model(DEM)
- 海底光缆undersea lightwave cable
- DEM值DEM
- 海底隧道undersea tunnel
- ”DEMDEM
- 海底电缆submarine cable
- DEM法DEM ( digital elevation model) method
- 开发海底石油to exploit the oil under the sea
- 海岸DEMcoastal DEM
- DEM方法discrete element method
- 海底生物submarine
- DEM数据DEM data
- 铺设了横越大西洋的海底电缆。Submarine cables were laid across the Atlantic.
- DEM模型DEM model
- 他们在开发海底石油。They are exploiting the oil under the sea.
- DEM精度DEM accuracy
