Attenuation by Substitution Measurement for Short-Length Multimode Graded-Index and Single-Mode Optical Fiber Assemblies是什么意思_Attenuation by Substitution Measurement for Short-Length Multimode Graded-Index and Single-Mode Optical Fiber Assemblies在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句