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jun 20, 1974 - 1974年6月20日上海电子管三厂制成12 英寸显像管。

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1974年6月20日上海电子管三厂制成12 英寸显像管。

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工业大事年表

2 Sep 2023

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Date:

jun 20, 1974

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~ 51 years ago

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