Sekuvhura, kuvhara uye kudzora mudziyo wekufemesa uye guruva rekubvisa pombi, kufefetedza butterfly vharafu kwakakodzera kufefetera, kubvisa guruva uye kuchengetedzwa kwezvakatipoteredza masisitimu musimbi, migodhi, simende, indasitiri yemakemikari uye kugadzirwa kwemagetsi.The ventilation butterfly v...
Verenga zvimwe