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What does RA stand for?

RA stands for Roughness Average (Surface texture of materials)

This definition appears frequently

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We have 122 other meanings of RA in our Acronym Attic

Samples in periodicals archive:

CONCLUSION The analyses of the mathematic models obtained make us possible to conclude: -The change of the roughness average in the function of cutting parameters can be represented in step function, -With the increase of cutting speed it is reduced the roughness average, -The increase of cutting depth has lower influence in the increase of Ra, -Larger influence in the roughness average has the feed and the nose radius r.