This main wing is made of a carbon/epoxy composite, is about 2 m in span, uses a NACA 4415 airfoil section, and pivots just ahead of the quarter chord.是什么意思_This main wing is made of a carbon/epoxy composite, is about 2 m in span, uses a NACA 4415 airfoil section, and pivots just ahead of the quarter chord.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句