在海洋的大部分区域，海床都由厚重的粘土构成，最适合吸收放射性衰变产物。
Inlarge parts of the ocean, the seafloor is made of thick, heavy clay, perfectfor absorbing radioactive decay products.
按地理学的观点，海床可划分成二个或三个大不相同的区域。
In geographical terms, the sea bed can be divided into two or three quite distinct regions.
至今为止，关于海岸海床地基土类的分析已有一些研究，但由于区域差异和研究侧重点的不同，尚难以进行系统的整理分析和深入研究。
Up to the present, There are some studies of seabed subsoil. Because of differences of regions and key researches, there are not systematic organization and further studies of seabed subsoil yet.
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