Kev tua xuab zeb yog cua compressed ua lub zog los tsuag xuab zeb lossis cov khoom siv tua rau ntawm qhov chaw ntawm cov khoom, kom ua tiav qhov chaw thiab qee qhov roughness. Kev tua xuab zeb yog txoj kev ntawm lub zog centrifugal tsim thaum cov khoom siv tua raug tig ntawm qhov ceev ceev, cuam tshuam rau qhov chaw ntawm lub ma ...