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material.
Tverdost
– svoystvo materialov
soprotivlyatsya plasticheskoy
deformatsii
ili xrupkogo
razrusheniyu v poverxnostnom sloe
pri mestnыx kontaktnыx silovыx
vozdeystviyax.
Hardness - a property of
materials to resist plastic
deformation
or brittle fracture
in the surface layer at a local
contact force impacts.
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