White corundum abrasive, eo hape e bitsoang white aluminium oxide, e na le botsitso bo botle ba mocheso, mocheso o phahameng oa ho hanyetsa ka holimo ho likhato tse 1750, bohloeki bo phahameng, ho itšeha hantle, bokhoni bo matla ba ho sila, boleng bo tlaase ba calorific, ts'ebetso e phahameng le ho hanyetsa ha kutu ea acid-base. E ipakile ho tse ngata...
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