China's unmanned submersible Qianlong III makes first dive into sea

China Plus Published: 2018-04-21 15:37:23
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China's unmanned submersible Qianlong III is prepared to make its first dive into the sea from the Chinese research vessel Dayang Yihao (Ocean No. 1), in the early morning on April 20, 2018. [Photo: Xinhua/Liu Shiping]

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