O le graphite rod o se meafaigaluega taua tele faʻaaogaina i le matata o metallurgy. Ona o lona tulaga faʻapitoa faʻaletino ma vailaʻau, o laʻau graphite o loʻo i ai se sao taua i le faʻagasologa o metallurgical, e ofoina atu le tele o mea lelei ma avanoa faʻaoga. Muamua lava, o le talosaga ...
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