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31 lugl 1970 anni - 1970年7月31日是日上海照相机厂制成中国第一架中心快门千分之一秒的单镜头反光式 120高精密度照相机。

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1970年7月31日是日上海照相机厂制成中国第一架中心快门千分之一秒的单镜头反光式 120高精密度照相机。

Aggiunto al nastro di tempo:

工业大事年表

2 set 2023

1

0

686

Data:

31 lugl 1970 anni

Adesso

~ 55 years ago

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