Haukwanise kuwana ruzivo kana zvinhu kana zvigadzirwa zvaunoda?
Isu Main Kugadzira uye Kupa Kunaya kwemvura kuomesa simbi isina tsvina uye mamwe simbi isina simbi, inova mhando yesimbi isina simbi ine simba rakawanda, kusimba kwepamusoro uye kukwirira kwecorrosion resistance nekuwedzera zvinhu zvinoomesera zvoga kana mukubatana mumhando dzakasiyana dzesimbi isina tsvina.