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How it works roller crusher machineBuilding Construction The huge spinning arms are powered by two 1250 horsepower motors and produce forces up to 30g (30 times the force of gravity or 15 times the force you feel on a typical roller coaster) Cranks and cams: How they work 2019 7 25 The steam engine either used on its own or as part of a train is the iconic invention of the industrial
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High-tech Zone , ZhengZhou , China