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1 giug 1997 anni - 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

Descrizione:

#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 set 2024

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3810

Data:

1 giug 1997 anni

Adesso

~ 28 years ago

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