This article aims at introducing the recent progress of studies on characteristics and test methods of optical fiber and cables and their relative technologies discussed at the ITU T SG15 meeting held in Geneva in October 2001.是什么意思_This article aims at introducing the recent progress of studies on characteristics and test methods of optical fiber and cables and their relative technologies discussed at the ITU T SG15 meeting held in Geneva in October 2001.在线翻译_英语_读音_用法_例句