Electric and optical fibre cables - Test methods for non-metallic materials - Part 504: Mechanical tests - Bending tests at low temperature for insulation and sheaths (IEC 60811-504:2012); German version EN 60811-504:2012
电缆和光缆.非金属材料的试验方法.第504部分:机械试验.绝缘和护套的低温弯曲试验(IEC 60811-504-2012);德文版EN 60811-504:2012