These sea gulls used to find food in the Bohai Bay sea area off Dalian city which was covered by heavy ice because of the cold weather.
这些海鸥过去是在大连市渤海湾海域觅食。因为最近低温天气，海面覆盖厚厚的冰层，所以它们才转移觅食地。
The property of physical-mechanics about deposit of sea beach area of west coast of the Bohai bay is restricted by the influence of compress with depth, and depends on the deposit environment.
渤海湾西岸滩海地区沉积层的物理力学性质除受到随深度压缩固结的影响外，还取决于形成时的沉积环境。
The thesis is based on the study to the North area of the Bohai Bay, the Yellow River estuary and the South area of the Bohai Sea, which are selected as typical areas.
本文以渤海湾北部海域、黄河口和渤海南部海域作为渤海典型海域进行研究。
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