Chromatic Dispersion Measurement of Multimode Graded-Index and Single-Mode Optical Fibers by Spectral Group Delay Measurement - Variable Aperture Method in the Farfield是什么意思_Chromatic Dispersion Measurement of Multimode Graded-Index and Single-Mode Optical Fibers by Spectral Group Delay Measurement - Variable Aperture Method in the Farfield在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句