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Pressure pulse generator for a hydraulic system, to determine unwanted pulsation, has a control with a cyclic rotary valve unit to give high frequency pulses?keyword=Pressure pulse generator for a hydraulic system, to determine unwanted pulsation, has a control with a cyclic rotary valve unit to give high frequency pulses?keyword=Pressure pulse generator for a hydraulic system, to determine unwanted pulsation, has a control with a cyclic rotary valve unit to give high frequency pulses?keyword=Pressure pulse generator for a hydraulic system, to determine unwanted pulsation, has a control with a cyclic rotary valve unit to give high frequency pulses?keyword=Pressure pulse generator for a hydraulic system, to determine unwanted pulsation, has a control with a cyclic rotary valve unit to give high frequency pulses?keyword=Pressure pulse generator for a hydraulic system, to determine unwanted pulsation, has a control with a cyclic rotary valve unit to give high frequency pulses?keyword=Pressure pulse generator for a hydraulic system, to determine unwanted pulsation, has a control with a cyclic rotary valve unit to give high frequency pulses?keyword=Pressure pulse generator for a hydraulic system, to determine unwanted pulsation, has a control with a cyclic rotary valve unit to give high frequency pulses 专利,更快更准确