China's manned submersible Jiaolong returns to its support ship, the Xiangyanghong-09 at Pacific Ocean, Sept. 3, 2013. Jiaolong and its support ship the Xiangyanghong-09 are on a scientific research voyage focusing on polymetallic nodules in the northeast Pacific and cobalt-rich crusts in the northwest Pacific. (Xinhua/Yu Xiaojie) |
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