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jun 1, 1997 - 1997 中国自主研发的无缆水下深潜机器人成功潜入水下6000米处进行科学试验

Description:

#1997.6

标志着中国海洋技术已跻身世界先进行列

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人教版高中历史|Chinese students' PEP SENIOR HIGH HISTORY TEXTBOOKS

29 Sep 2024

4

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3810

Date:

jun 1, 1997

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~ 28 years ago

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