China's 'milestone' in deep-sea research

Updated: 2016-08-13 07:58

By LIU XIAOLI(China Daily)

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China's 'milestone' in deep-sea research

Tan Suo Yi Hao, the mother ship of a 4,500-meter manned submersible, returns to her home port of Sanya, Hainan province, on Friday after completing her maiden voyage.[Photo/Xinhua]

 

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