世界大洋的研究具有很大的理论意义,因为海洋几乎占地球面积的四分之三,而且,现代自然科学家向海洋学家提出了越来越多的要求。世界大洋的研究对于实践——发展渔业、远洋航行及航空都有不少的重要作用,它是国民经济中一切部门所需要的一门学科,没有这一学科的资料就 The study of the world’s oceans has great theoretical significance because the oceans account for almost three-fourths of the Earth’s surface, and modern natural scientists have placed ever-increasing demands on oceanographers. The study of the world’s oceans has many important roles in practice-developing fisheries, ocean-going navigation and aviation. It is a discipline required by all departments in the national economy. Without the information of this discipline