сквозное отверстие . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026.
https://sonaveeb.ee/search/unif//mtr/%D1%81%D0%BA%D0%B2%D0%BE%D0%B7%D0%BD%D0%BE%D0%B5%20%D0%BE%D1%82%D0%B2%D0%B5%D1%80%D1%81%D1%82%D0%B8%D0%B5/1/rus (11.11.2026)

сквозное отверстие . Metalliaabits. Estonian Language Institute, Sõnaveeb 2026.
https://sonaveeb.ee/search/unif//met/%D1%81%D0%BA%D0%B2%D0%BE%D0%B7%D0%BD%D0%BE%D0%B5%20%D0%BE%D1%82%D0%B2%D0%B5%D1%80%D1%81%D1%82%D0%B8%D0%B5/1/rus (11.11.2026)

сквозное отверстие . Koolisõnastikud 2005–2010. Estonian Language Institute, Sõnaveeb 2026.
https://sonaveeb.ee/search/unif//kool_KV/%D1%81%D0%BA%D0%B2%D0%BE%D0%B7%D0%BD%D0%BE%D0%B5%20%D0%BE%D1%82%D0%B2%D0%B5%D1%80%D1%81%D1%82%D0%B8%D0%B5/1/rus (11.11.2026)