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.)
...
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.)
...