Idiphu eshushu yediphu ikwidiphu yediphu eshushu enyibilikayo, isantya semveliso, ukutyabeka okushinyeneyo kodwa okungalinganiyo, imarike ivumela ukutyeba okuphantsi kweemicrons ezingama-45, ukuya kutsho kuma-300 eemicrons ngaphezulu.Imnyama ngombala, itya intsimbi ye-zinc ngakumbi, yenza umaleko wokungenwa ngesiseko sentsimbi, kwaye inomhlwa olungileyo...
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