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Modern Electronics Research Development Facility: Engineer Working on Computer Typing with His Hands on a Keyboard. Scientist Design PCB Silicon Microchips Semiconductors. Closeup Focus on Hands

视  频 ID：  1065341833
版      权：  Gorodenkoff
视频长度：  0:10
横纵比率：  16:9
所属分类：  人物 科技 
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