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puur, mille lõikegeomeetria kujundatakse piki puuri kulgeva spiraalse soone otsa kooniliseks teritamisega, a drill with one or more deep helical grooves in the body extending from the point to the smooth portion of the shank
keerdpuur . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/keerdpuur/1/est (01.07.2026)
Inflection Type 22e