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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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19 Apr 1964 Jahr - 1964年4月19日上海科化医用仪表厂试制成功6种不同型号的X光电子管,填补中国大型X光电子管空白。
Beschreibung:
1964年4月19日上海科化医用仪表厂试制成功6种不同型号的X光电子管,填补中国大型X光电子管空白。
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工业大事年表
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2 Sep 2023
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19 Apr 1964 Jahr
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~ 61 years ago
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