单词	frictional
释义	frictional /ˈfrɪkʃ(ə)n(ə)l / adjective Of or produced by the action of one surface or object rubbing against or moving over another: frictional drag... The horribly complex equations cover two pages, with factors including angular momentum, frictional force, angular velocity, axis of symmetry and gyroscopic balance. Many systems, located on different parts of the body, involve surfaces with particular frictional properties. The standard frictional force law makes sense only if the two surfaces are identical crystals, fitting together at the atomic level like a pair of gears.
随便看	Angevin angina anginal angina pectoris angio- angiocardiographic angiogenesis angiogram angiographer angiographic angiographically angiography angioid angioma angioneurotic angioplasty angiosperm angiospermous angiostatin angiotensin Angkor angle angle bead angleberry angle brace

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