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没看英文新闻吧。。。

来源: Uusequery 于 2025-01-30 20:01:45 [旧帖] [给我悄悄话] 本文已被阅读：次

https://www.livescience.com/technology/engineering/boom-supersonic-xb-1-smashes-the-sound-barrier-becoming-the-1st-civil-aircraft-to-go-supersonic-in-us-history

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