This paper introduces the Optical Fibre B-ISDN that wasimported from ANT Commpany of West Germany by Guilin Instituteof Optical Communications.是什么意思_This paper introduces the Optical Fibre B-ISDN that wasimported from ANT Commpany of West Germany by Guilin Instituteof Optical Communications.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句