单词	camshaft
释义	camshaft /ˈkamʃɑːft / noun A shaft with one or more cams attached to it, especially one operating the valves in an internal combustion engine.The combination of a center-mounted spool valve and check valve allow the camshaft's torsional energy to assist actuation, rather than oppose it.... A timing belt or timing chain links the crankshaft to the camshaft so that the valves are in sync with the pistons. This approach is typically used in manufacturing camshafts, crankshafts, valves, pistons - just about any machined part that goes into an automobile engine these days.
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