单词	profile drag
释义	profile drag profile drag n (General Physics) the sum of the surface friction drag and the form drag for a body moving subsonically through a fluid profile drag profile drag [¦prō‚fīl ‚drag] (fluid mechanics) That part of the airfoil drag that results from the skin friction and the shape of the airfoil as indicated by the airfoil profile. profile drag Streamlining reduces profile drag substantial.The combined effect of form drag and skin friction. It is total drag less induced drag. It is a type of parasite drag that increases as the square of speed and is dependent on the shape of the body and its smoothness. See also form drag and skin friction.
随便看	standard and poors 500 composite index standard and poor's 500 index standard and poors 500 index standard and poor's 500 stock index standard and poors 500 stock index standard and poor's 600 standard and poors 600 standard and poor's 600 index standard and poors 600 index standard and poor's 700 standard and poor's 700 stock index standard and poor's commodity index standard and poor's confidence indicator standard and poors confidence indicator standard and poor's core earnings standard and poor's corporation standard and poor's depositary receipt standard and poor's depository receipt standard and poor's global 100 standard and poor's global 100 index standard and poor's global 1200 standard and poor's global 1200 index standard and poor's index standard and poor smallcap 600 standard and poor smallcap 600 index

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