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NF法国铁路标准(NF railway standards)

NF法国铁路标准(NF railway standards)

NF A45-318-1990  冶金产品.国际铁路联盟50kg/m平底钢轨  (IRON AND STEEL. UIC 50 FLAT BOTTOM RAILWAY RAIL.) 
NF A45-319-1990  冶金产品.国际铁路联盟(UIC)标准 平底钢轨及其鱼尾板  (IRON AND STEEL. UIC 54 FLAT BOTTOM RAILWAY RAIL AND ITS FISH PLATE.) 
...

法国铁路标准(NF railway standards)

NF A45-318-1990  冶金产品.国际铁路联盟50kg/m平底钢轨  (IRON AND STEEL. UIC 50 FLAT BOTTOM RAILWAY RAIL.) 
NF A45-319-1990  冶金产品.国际铁路联盟(UIC)标准 平底钢轨及其鱼尾板  (IRON AND STEEL. UIC 54 FLAT BOTTOM RAILWAY RAIL AND ITS FISH PLATE.) 
...

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