COPPER COIL AND THRUST BEARING - NARA - 17419098.jpg
en
COPPER COIL AND THRUST BEARING NARA 17419098, Bearings, 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, COPPER COIL AND THRUST BEARING
commons
ja
国立公文書館所蔵の画像:他、国立公文書館所蔵の画像:
commons_translated
thrust bearing bearing field coil thrust relevance irrelevant salience coil irrelevantly coiling