oceanic area meaning in English

大洋区
洋区

Similarly , in coastal regions where rivers dilute the sea , salinity is somewhat lower than in other oceanic areas
同理，在江河稀释海水的海岸地带，海水盐度略低于其它海区。
The ming dynasty used besides the technology of forefathers ' monsoon to make certain routes , the compass to gauide marching , they took a lot of records of the constellation oriented datas and the variety of the ocean orb ' s height in different oceanic areas in the book named < constellation chart of acrossing seas > too , which contribute a lot in the archaian astronomy
明朝船队除了采用前人季风确定航线、指南针导航等技术外，还在《过洋牵星图》中纪录了众多的星宿定位数据和不同海区天体高度的变化，对古代的天文导航有重要贡献。