u er surface of the airfoilupper surface of the airfoilupper surface of wingupper wing surface机翼: wings of an aeroplane side; ...上: upper; up; upward表面: surface; superficies; bounda ...机翼上: there's... something... on... the wing上表面: supine surface; top surface; u er surface; upper surface下载手机词典可随时随地查词查翻译
