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õmbluse juure kaitsmiseks keskkonna eest juure poolt keevisvanni alla juhitav juuretoena kasutatav inertgaas, gas to protect molten weld pool at the root joint of the weld seam from atmospheric contamination
backing gas . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/backing%20gas/1/eng (03.07.2026)
