亞音速有亞音速的好處，紅外線signature小不容易被發現，可以貼海麵飛行不容易被發現。

來源: Porcelana 於 2023-04-13 15:25:13 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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