upper-surface brakeupper-surfacebrake上: upper; up; upward翼: the wing of a bird面: face减速板: air brake; dive flap上翼面: top aerofoil; upper aerofoil; wing upper surface下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:上翼面减速板，即可在微信中查询翻译
