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dec 28, 1970 - 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。

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工业大事年表

2 Sep 2023

1

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731

Date:

dec 28, 1970

Now

~ 55 years ago

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