SCIENCE|natural and applied sciences|physical sciences · INDUSTRY|mechanical engineering|precision engineering
- luach R<sub>a</sub> Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
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- Ra value | Ra value
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- Definition arithmetic average of the profile of a surface (in units of length), used to represent the surface's roughness Reference "COM-EN, based on:Wikipedia > Surface roughness. http://en.wikipedia.org/wiki/Surface_roughness [26.4.2012]"