M'dziko lopangidwa ndi dziko lopangidwa ndi malonda, kufunika kwa zinthu zokhazikika komanso zolimbitsa thupi sizinakhalepobe. Mwa zina zambiri zomwe zingakhalepo, ulusi woyera wa titanium dioxide (TiO2) imayimilira ngati chisankho choyambirira cha o ...