Taw qhia rau qhov zoo thiab qhov tsis zoo ntawm Brinell hardness
Brinell qhov nyuaj kuaj muaj qhov zoo ntawm kev sawv cev muaj zog, cov ntaub ntawv zoo rov ua dua tshiab, thiab muaj qhov hloov pauv tshwj xeeb nrog lub zog. Qhov tsis zoo yog tias nws tsis tuaj yeem kuaj cov khoom nyuaj; qhov kev nkag los yog loj thiab nws tsis haum rau kev kuaj khoom tiav. Feem ntau siv los kuaj qhov nyuaj ntawm cov ntaub ntawv raw li cam khwb cia hlau, tsis yog hlau, hlau me me thiab feem me me.