| 21. | Spin welding is a particular form of frictional welding.
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| 22. | This effect depends on the tangential compliance and frictional effect in the collision.
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| 23. | Frictional unemployment coincides with an equal number of vacancies.
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| 24. | Grease-lubricated bearings have greater frictional characteristics due to their high viscosity.
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| 25. | Earthquakes only exist because there is a very large loss in frictional strength.
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| 26. | The relationship between frictional interactions and asperity geometry is complex and poorly understood.
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| 27. | The differential diagnosis includes intertrigo, candidiasis, and frictional or contact dermatitis.
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| 28. | For more information on frictional forces, see friction.
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| 29. | These machines exploit the increased frictional forces found at the micro or nanoscale.
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| 30. | Where f _ r is the frictional drag coefficient.
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