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

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

Gear hobbing produces more accurate gears than milling because in hobbing

Minimum dimensional and form accuracy can be obtained in the cylinder bores of automobile engines if the bores are finished by