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Otu esi eme ka ihe ndi ozo di nma nke nkedo nkedo
Olee otú iji melite n'ibu Njirimara nke nkedo isi awọ iron? Igwe ntụ ntụ bụ iron-carbon alloy nke akụkụ ya na-acha ntụ. Site na njikwa nke ihe mejupụtara na usoro mmezi ahụ, carbon na-apụtakarị n'ụdị flake graphite. Ndị m ...GỤKWUO
