DIN EN 61753-031-3-2015 光学纤维互连器件和无源元件性能标准.第031-3部分:U类非连接式单模1xN和2xN非波长选择分路设备.非控制环境(IEC 61753-031-3-2014);德文版本EN 61753-031-3-2015
Fibre optic interconnecting devices and passive components - Performance standard - Part 031-3: Non-connectorized single-mode 1xN and 2xN non-wavelength-selective branching devices for Category U - Uncontrolled environment (IEC 61753-031-3:2014); German v