Using 59 good quality observation data from IGS tracking station, this paper analyses the result of TEC that is caused by X5. 7 solar flare on Jul. 14 2000 and X14. 4 solar flare on Apr. 15, 2001.是什么意思_Using 59 good quality observation data from IGS tracking station, this paper analyses the result of TEC that is caused by X5. 7 solar flare on Jul. 14 2000 and X14. 4 solar flare on Apr. 15, 2001.在线翻译_英语_读音_用法_例句