Jiaolong descends over 6 km in Mariana Trench

Updated: 2017-05-26 07:48

(Xinhua/China Daily)


<EM>Jiaolong</EM> descends over 6 km in Mariana Trench
The Jiaolong's robot arm retrieves a rock sample on May 23, 2017, on the first of the current series of dives. [Photo/Xinhua]

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