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Chapter 248 Machining center completed (below)
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... orkpiece, without any polishing treatment, but now the surface roughness that can be visually resolved has reached the level between dark gloss and bright gloss. It is only three to four levels lower than the highest mirror level.
Mirror level means that the surface roughness can reach 0.006 microns, while the dark gloss side is 0.1 microns and the bright shiny side has a roughness of 0.05 microns.
That is to say, the surface roughness directly processed is not polished, even if it ...
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