Cov khoom
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TCC-IV Ntev Taug Kev Mus Los Tsis Tau Sib cuag Bearings
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Railcar Knuckle: Ua los ntawm AAR M-201 Qib E steel
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AAR (Association of American Railroads) ua raws
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Aar-raws li lub cev coupler: rail tsheb sib txuas
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Angle Cock: Ua kom muaj kev nyab xeeb thiab muaj txiaj ntsig tsheb ciav hlau nres
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Advanced Rail Tsheb Axles: Ua kom ruaj khov thiab nyab xeeb