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23 jun 1984 ano - 1984年6月23日中国第一家制造程控数字电话交换机企业——中比合资上海贝尔电话设备有限公司成立。

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1984年6月23日中国第一家制造程控数字电话交换机企业——中比合资上海贝尔电话设备有限公司成立。

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工业大事年表

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23 jun 1984 ano
Agora
~ 41 years ago
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