现代奇迹 - Season 9 Episode 34 第 34 集
They are the cutting edge in firearm technology. They fight simulated battles on computers, decades before a shot is fired. But will they make the world safer…or more dangerous than ever before? They are Super Guns of Today and Tomorrow.
- 类型: Documentary
- 工作室: History, H2
- 关键词: technology, invention, disaster, construction, machine
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