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History of the U.S. Flag, in Paper
4:01
YouTubeVexillographer
History of the U.S. Flag, in Paper
It's posterboard, actually. Close enough. Anyway, here's the history of the United States flag. Do you think there will be more stars (or less) on the future American flag? Let me know in the comments what you think. :) And thank you for watching!
已浏览 2054.2万 次2017年10月22日
Railgun
Railgun Weapon Systems
Railgun Weapon Systems
ga.com
2009年1月1日
Railguns: All you need to know about the weapon that uses electromagnetic force
Railguns: All you need to know about the weapon that uses electromagnetic force
interestingengineering.com
2022年11月3日
Japan develops cutting-edge railgun cannon
Japan develops cutting-edge railgun cannon
defence-blog.com
2023年12月5日
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