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To admit the gasoline–air mixture to the cylinders and exhaust the burned gases, valves are used; these are generally opened and shut because of the wedging motion of cams (projections) on the rotating camshaft that may be pushed within the crankshaft by gears or a chain. The idea that the https://restaurant-qr-code14680.newsbloger.com/29517965/the-greatest-guide-to-machine

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