The process of shot peening increases the fatigue life of steel springs mainly because it results in

When $$1.0\% $$ plain carbon steel is slowly cooled from the molten state to $$740C,$$ the resulting structure will contain

In small lot production for machining $$T-$$slots on machine tables, it is expected to use

If the longitudinal feed in center-less grinding is expressed by
$${V_f} = \pi \,D.\,\,N\,\sin \,\alpha ,\,\,D$$ stands for