Optical Fibre Cables Part 4-30: Aerial optical cables along electrical power lines – Family Specification for OPPC (Optical Phase Conductor) (IEC 86A/1951/CD:2019);
出版:Verband Deutscher Elektrotechniker
专家解读视频
Optical Fibre Cables Part 4-30: Aerial optical cables along electrical power lines – Family Specification for OPPC (Optical Phase Conductor) (IEC 86A/1951/CD:2019);
出版:Verband Deutscher Elektrotechniker
专家解读视频