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ocean floor relief map 海底地形图
The submarine bottomed to observe the ocean floor. 潜艇潜入海底观察洋底。
The submarine bottomed on the ocean floor. 潜水艇停在洋底。
The damaged ship leaned over and slowly settled down on the ocean floor. 这艘损坏的船倾斜起来，慢慢沉到大洋底。
Sediment building up on the ocean floor. 海底积累的沉积物
That the ocean floor is not flat is a known fact. 洋底不是平坦的是一个已知的事实。
A long, steep-sided valley on the ocean floor. 海沟一种海底狭长而两边陡峭的山谷
The submarine bottomed on the ocean floor . 潜水艇停在洋底。
A large, bowl-shaped depression in the surface of the land or ocean floor. 凹地，海盆在陆地或海底平面的一种大的，碗状的凹地
Today enough soundings are available to enable a relief map of the Atlantic to be drawn. 今天可以得到足够的水深资料来绘制大西洋的海底地形图。
Recent ocean floor data confirm the first part of this slow process. 近来洋底资料证实了这一缓慢过程的第一部分。
Topographically speaking, China is high on the relief map in the west but low in the east. 降雨的总趋势从东南沿海向西北内陆逐渐减少。
But starting today we have a much more detailed bathymetric map (the ocean floor), so you can actually drop below the surface and explore the nooks and crannies of the seafloor in 3D. 不过从今天开始我们有了一个更详细的等深图（海底图），这样，您真得可以潜入海平面以下，以三维的形式探索各个海底角落与缝隙。
Today enough soundings are available to enable a relief map of the Atlantic to be drawn and we know something of the great variety of the sea-bed's topography. 现在已测得足够的水深资料,有可能画出大西洋的地形图,对于极其复杂的海底地形也有所了解。
The ocean floor near the continents is abundant in mineral and oil deposits. 靠近大陆的海底矿藏和石油藏量丰富。
A 3-D stereogram is given showing the primary topography in AUTOCAD, utilizing the vectorized primary relief map of the slope of a mining junkyard in a certain iron ore stope. 摘要利用矢量化的某铁矿排土场边坡原地表地形图在AUTOCAD中形成原地表三维立体图。
Echo sounding devices were early used in making maps of the ocean floor. 讲的是回声定位仪器最早用于绘制海底地图。很容易找到对应的答案。
In order to improve the accuracy of landuse classification in loess hilly area, a large scale relief map was used to create the digital geomorphic model (DGM). 本文拟探讨在黄土丘陵区运用大比例尺地形图数据，建立区域数字地貌模型；
Underwater photography is also important in mapping parts of the ocean floor. 水下摄影在绘制部分海床图时也是很重要的一个方法。
Today, enough soundings are available to enable a relief map of the Atlantic to be drawn and we know something of the great variety of the sea bed's topography. 现在已有足够的水深测量数据来绘制一张大西洋洋底地形图,而且我对海底地形的千变万化也有了一定的了解。