CAST TURBINE BLADES - NARA - 17470242.jpg
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CAST TURBINE BLADES NARA 17470242, US National Archives series: Photographs Relating to Agency Activities, Facilities and Personnel, Images from the National Archives and Records Administration, US National Archives location: other, CAST TURBINE BLADES
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ja
CAST TURBINE BLADES NARA 17470242、米国国立公文書館所蔵: CAST TURBINE BLADES
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impeller fan blade impelling rotor