A system of tolerance is necessary to allow the variations in accuracy that should occur during manufacture, and to provide interchangeable possible of the parts.
A system of tolerance is necessary to allow the variations in accuracy that should occur during manufacture, and to provide interchangeable possible of the parts.
必须有一种公差制来考虑制造过程中必然会产生不同的精度误差，并且保证零部件的可互换性。