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Crude oil extraction from Monterey Shale near Bakersfield, California, USA.
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Engineer in electric power plant inspecting a electrically controlled valve
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Red Knobs and Pipes, 798 Art District, Chaoyang District, Beijing, China
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Engineer inspecting valves during power station outage, low angle view
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Old Pipes and Knobs, 798 Art District, Chaoyang District, Beijing, China
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Prosthetic heart valves. Coloured X-ray of the chest of a patient that has had their mitral and aortic heart valves replaced with prosthetic valves (centre right). Heart valves control the flow of blood between chambers of the heart. Valve failure can lead to malfunctioning of the heart and death.
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Germany, Hamburg, Yellow, red and green valves on a container ship, close up
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Computer artwork of an anterior cut through the heart, showing the interior of both ventricles, the aortic valve, and the pulmonary trunk and internal chambers.
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1970s INTERIOR ATOMIC POWER PLANT MAZE OF PIPES PIPING VALVES GAUGES NUCLEAR ENERGY INDUSTRY
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Prosthetic heart valves. Coloured X-ray of the chest of a patient that has had their mitral and aortic heart valves replaced with prosthetic valves (centre right). Heart valves control the flow of blood between chambers of the heart. Valve failure can lead to malfunctioning of the heart and death.
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Close up of a gauge on a copper brew kettle or fermentation chamber.
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