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põkkõmbluse keevitusdefekt – väike soon õmbluse juurepinna keskel mis on tingitud metalli kahenemisest tardumisel (vt põkkõmblus), shallow, deepening at the root of the weld resulting from shrinkage in butt weld (see: butt weld)
concavity of the root . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/concavity%20of%20the%20root/1/eng (19.07.2026)
