In this paper, first-principles calculations within the generalized gradient approximation (GGA) are carried out on the band gaps of zigzag SWNTs (7, 0) (8, 0) (9, 0) and (12, 0).是什么意思_In this paper, first-principles calculations within the generalized gradient approximation (GGA) are carried out on the band gaps of zigzag SWNTs (7, 0) (8, 0) (9, 0) and (12, 0).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句