They are often used in the distributed form to improve the OSNR of a long fiber span.The pumping schemes of FRAs greatly affect their performance and attract many research interests in recently years.是什么意思_They are often used in the distributed form to improve the OSNR of a long fiber span.The pumping schemes of FRAs greatly affect their performance and attract many research interests in recently years.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句