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long gong qu bao de li qi wo guo yan zhi shui xia ji qi ren zhui ji
Author(s): 
Pages: 14-15
Year: Issue:  3
Journal: Ordnance Knowledge

Abstract: <正> 在遥远的古代,人们对浩渺无边的大海充满了美好的幻想——在那里有富丽堂皇的龙宫,有数不尽的奇珍异宝。现代人当然不再相信这些神奇的故事,但大海里确实蕴藏着无数可供人类利用的宝贵资源。可是要取得驾驭大海的资格又谈何容易。深深的海底漆黑一片,有巨大可怕的压力,有汹涌的洋流,复杂而危险的海底地貌。但人类是不会被困难吓倒的,二战
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