GB/T 18311.4-2003 Fibre optic interconnecting devices and passive components-Basic test and measurement procedures-Part 3-4:Examinations and measurements-Attenuation (English Version)
2003GB/T 18311.4-2003 Fibre optic interconnecting devices and passive components-Basic test and measurement procedures-Part 3-4:Examinations and measurements-Attenuation