BLADES IN BLADE TESTER - NARA - 17469561.jpg
en
BLADES IN BLADE TESTER NARA 17469561, 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, BLADES IN BLADE TESTER
commons
ja
BLADES IN BLADE TESTER NARA 17469561、米国国立公文書館所蔵: 活動・施設・人事に関連する写真、米国国立公文書館管理局所蔵: その他、BLADES IN BLADE TESTER
commons_translated
tester impeller impelling rotor blade lamina