Aeronautic instrument (unidentified).jpg
National Institute of Standards and Technology
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Aeronautic instrument (unidentified), Aeronautic instrument.
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Aeronautic instrument (unidentified), Aeronautical measurement, Aerospace engineering, National Bureau of Standards
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航空計器
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航空計器(未確認)航空測定、航空宇宙工学、国立標準局
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aeronautical engineering aeronautical engineer office instrument aerospace engineering rocket scientist aeronautics aerospace engineer aeronautical