DIN EN 60793-2-40-2011 光纤.第2-40部分:产品规范.A4类别的多模纤维分规范(IEC 60793-2-40-2009).德文版本EN 60793-2-40-2011
Optical fibres - Part 2-40: Product specifications - Sectional specification for category A4 multimode fibres (IEC 60793-2-40:2009); German version EN 60793-2-40:2011