ʻO nā mea ʻoki daimana polycrystalline (PDC) ʻo Diamond ka mea paʻakikī loa i ʻike ʻia.Hāʻawi kēia paʻakikī i nā waiwai maikaʻi no ka ʻoki ʻana i nā mea ʻē aʻe.He mea koʻikoʻi loa ka PDC i ka wili ʻana, no ka mea, e hōʻuluʻulu ʻo ia i nā daimana liʻiliʻi liʻiliʻi, maʻalahi, i hana ʻia e ke kanaka i loko o ka nui, intergrown mass...
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