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28 dic 1970 anni - 1970年12月28日上海电子光学研究所试制成功40万倍一级大型电子显微镜。

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1970年12月28日上海电子光学研究所试制成功40万倍一级大型电子显微镜。

Aggiunto al nastro di tempo:

工业大事年表

2 set 2023

1

0

689

Data:

28 dic 1970 anni

Adesso

~ 54 years ago

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