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to phrases
hardness Resistance of a solid to indentation, scratching, abrasion or cutting adj.
environ. cietība
 English thesaurus
hardness ['hɑ:dnɪs] abbr.
abbr. hdns
jewl. см. Mohs Scale of Hardness
hardness: 6 phrases in 3 subjects
Environment1
Industry2
Metallurgy3