Fibre optic interconnecting devices and passive components performance standard - Part 021-2: Grade C/3 single-mode fibre optic connectors for category C - Controlled environment (IEC 61753-021-2:2007); German version EN 61753-021-2:2008
纤维光学互连器件和无源元件性能标准.第021-2部分:C类C/3级单模纤维光学连接器.受控环境(IEC 61753-021-2-2007);德文版EN 61753-021-2:2008