Mutsara wokutanga: Pazasi pe hydrometer pane girobhu rakaremerwa uye pani iri kumusoro nokuda kwezvinorema zviduku. Mutsara wechipiri: Pazasi pe hydrometer pane girobhu rakayerwa uye kumusoro pane pani yehuremu hushoma. Mubvunzo: Mutsara wokutanga nomutsara wechipiri unoreva chinhu chimwe chete here? Hungu kana kuti Aiwa?
Hungu