Bell X-1 (Smithsonian).jpg
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Bell X 1 (Smithsonian), Bell X-1 at the National Air and Space Museum
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Bell X 1 (Smithsonian), Bell X-1 rocket plane at the Smithsonian
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国立航空宇宙博物館のベルX-1
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スミソニアンのベルX-1ロケットプレーン
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