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Mechanical SealsPlastic MaterialsVibration Spectrum AnalysisEconomical ComparisonHydraulic HoistingCentrifugal ProcessMine DewateringNon-metallic MaterialsMechanical ShaftPump ComponentsPositive DisplacementMachine ComponentsTime SpectrumPump PartsSuspended MatterMuddy WaterMaterial SelectionEntrained AirMechanical TestsRotary Pumps