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mechanical digestion The conversion of food into small pieces by chewing, churning of the stomach, or emulsifying action of bile salts, thereby exposing more surface area to digestive enzymes.
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mechanical rectifier A device that, by changing contacts at the proper moment in a cycle, changes alternating current into pulsating direct current.
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mechanical restraint Restraint by physical devices.
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mechanical stimulus A stimulus produced by a physical change such as contact with objects or changes in pressure.
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mechanical traction The use of a device or mechanical linkage (i.e., pulleys and weights) to apply a traction force.
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