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the hardness measured by pendulum hardness tester, based on damping time required for a specified decrease in oscillation, pendelkõvadusmõõturiga määratud kõvadus, mis põhineb pendli võnkumise vähenemisel ettenähtud sumbumisajal
pendulum hardness . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/pendulum%20hardness/1/eng (01.07.2026)