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单词 angular velocity
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angular velocity
angular velocity n. a quantity or pseudovector expressing the rate at which an object rotates around a point, measured in revolutions, degrees, or radians per unit of time.
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1715 in W. Whiston Astron. Lect. xxvi. 303 The lesser Velocity in the Periphery of the greater Circle, diminisheth the Angular Velocity about the Focus, as much as the Periphery is the greater.
1835 M. Somerville On Connexion Physical Sci. (ed. 2) 455 The angular velocity of the earth is at the rate of 180° in twelve hours.
2018 R. A. Serway & C. Vuille College Physics (ed. 11) vii. 192 The rotor on a helicopter turns at an angular velocity of 3.2 × 102 revolutions per minute.
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