Electric and optical fibre cables - Test methods for non-metallic materials - Part 301: Electrical tests - Measurement of the permittivity at 23 °C of filling compounds (IEC 60811-301:2012); German version EN 60811-301:2012
电缆和光缆.非金属材料的试验方法.第301部分:电气试验.填充化合物在23℃下介电常数的测量(IEC 60811-301-2012);德文版EN 60811-301:2012