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sep 20, 1964 - 1964年9月20日上海市电子光学技术研究所和工厂、高校协作，研制成功 20 万倍电子显微镜。

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1964年9月20日上海市电子光学技术研究所和工厂、高校协作，研制成功 20 万倍电子显微镜。

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工业大事年表

2 Sep 2023

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sep 20, 1964

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~ 61 years ago

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