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Piston or actuator and other mechanism in pneumatic or hydraulic machine. Technology and engineering
Bio-mechanical engineers test a myoelectric prosthetic arm on a user. They are calibrating the sensors and actuators for optimal neuromuscular control and functionality in an RD lab.
Pressure control valves or Shutdown valves in oil and gas process and controlled by Program Logic Control, PLC controller the valve and control instrument gas supply to actuator of the valve as PLC
Bio-mechanical engineers test a myoelectric prosthetic arm on a user. They are calibrating the sensors and actuators for optimal neuromuscular control and functionality in an RD lab.
Electric motors (AC servo motor, DC brush-less motor, and stepping motor)

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