单词	critical angle
释义	critical angle noun 1. : the least angle of incidence at which total reflection takes place when a ray of light or other electromagnetic radiation passes through one medium toward another that is less refracting 2. or critical angle of attack aeronautics : the angle of attack at which the flow about an airfoil changes abruptly with corresponding abrupt changes in the lift and drag, an airfoil possibly having two or more critical angles one of which usually corresponds to the angle of maximum lift [critical angle: AOB, AO'B', AO''B'' angles of incidence; AOC refracted ray; AO''C'' totally reflected ray; AO'B' critical angle]
随便看	seedlike seedling seedling seedling-rooted seedlip seedman seed money seedness seed oyster seed pan seed parent seed pearl seed piece seed plant seed planter seed plate seed-plot seed plow seedpod seedpod seeds seeds seeds hay seedsman seed snipe

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