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Waa maxay codsiyada birta ee dufanka leh?
Duflex Stivens bir ah waa bir bir aan argagax lahayn oo wejiyada loo yaqaan 'Ferrite' oo wejiyada Ferrite ee loo yaqaan 'Ferrite' oo wejiyada loo yaqaan 'Ferrite' iyo marxaladaha nafaqeynta ee xalka adag ee xalka adag ee akoon kasta oo qiyaastii 50% ah. Kaliya maahan adkaan wanaagsan, xoog sare iyo iska caabin aad u wanaagsan oo ah xarkaha chloride, laakiin sidoo kale iska caabbinta tuubbada daadashada iyo is-afgaradka ...Akhri wax dheeraad ah