Cov khoom siv kho qhov muag tsis siv neeg (AOI) tau dhau los ua ib feem tseem ceeb ntawm kev lag luam granite nyob rau lub sijhawm tsis ntev los no.Qhov kev xav tau rau kev tswj xyuas kom zoo, kev ua haujlwm zoo, thiab txo tus nqi tau ua rau kev txais yuav ntawm AOI hauv ntau yam ntawm kev lag luam granite.Cov khoom siv no muaj ...
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