Due to the Fresnel reflection in optical fiber links there will be dead zone existing in the measurement using OTDR.This paper gives a quantitative analysis of this so called dead zone.是什么意思_Due to the Fresnel reflection in optical fiber links there will be dead zone existing in the measurement using OTDR.This paper gives a quantitative analysis of this so called dead zone.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句