Kunezinhlobo ezimbili zezinto ezingavuthiwe zokukhiqiza i-alumina ecushiwe, enye “impushana esheshayo” ekhiqizwa itshe le-tricumina noma i-Bayer, kanti enye ikhiqizwa usawoti we-alumina noma i-aluminium noma kokubili ngesikhathi esisodwa. I-X, i-ρ-alumina kanye nokukhiqizwa kwe-X, ρ-alumina X, i-ρ-alumina iyona r...
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