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Rockwell hardness ['rɔkwəl'hɑ:dnɪs]
met., tech. Rockwell-keménység
 English thesaurus
Rockwell hardness ['rɔkwəl'hɑ:dnɪs]
abbr., automat. Rc
abbr., polym. Rb; r.h.
Rockwell hardness: 3 phrases in 1 subject
Metallurgy3