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→6.4.1 Definition of Terms and Symbols
*'''Frictional wear''' <br />is the loss of material caused by mechanical wear between contact parts.
*'''Bounce''' <br />is the single or multiple interruption of conduction between contact parts during the make operation caused by alternatingtransformation of kinetic to potential energy.
*'''Contact wear''' <br />includes all changes on a contact surface. Mechanical and electrical wear must be distinguished.