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The replacement of a specific inference is intended with the other
Force-form-fitting Exchange - or called short-circuit with alternating. A power circuit consisting of a differential pair of surfaces,
can be achieved by a second pair of active area in a positive locking transfer. Therefore, one can rule in the present form in another abstraction of the rule "speed change" with respect to active surfaces
back. For practical use, it seems however, not appropriate use of this facility to, as this would make a difficulty, and other power- Final form for the designer known concepts. The image shows examples of a force for change in final-form cam gears and a shaft-hub connection.