Scientific researchers pull ropes to stabilize the country's self-developed underwater robot during its first experimental operation in the South China Sea, July 24, 2017. It is expected to stay underwater for 20 hours. (Xinhua/Zhang Xudong)
China tests underwater robot in South China Sea
Source: Xinhua| 2017-07-24 19:03:25|Editor: Song Lifang
KEY WORDS: robot
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