Xim av corundum sib tsoo log cov yam ntxwv

Cov duab ntawm kev sib tsoo log feem ntau suav nrog lub sib tsoo lub tiaj, lub koob sib tsoo lub ntsej muag sib tsoo, ob tog sib tsoo lub ntsej muag sib tsoo, sib tsoo lub tog sib tsoo, cov phaj sib tsoo lub log thiab cov tais sib tsoo lub log. Qhov sib tsoo sib tsoo tau tsim ua ntau yam duab thiab ntau thiab tsawg raws li qhov xav tau ntawm lub tshuab qauv thiab kev sib tsoo. Cov lus 6 qhia cov qauv, qhov loj me, kev cai thiab kev siv ntawm ob peb lub cav sib tsoo feem ntau. Txoj kab sab nraud ntawm kev sib tsoo lub log yuav tsum tau xaiv kom loj li sai tau los txhim kho qhov ceev ntawm lub sib tsoo log, uas tau zoo dua rau kev txhim kho qhov sib tsoo cov khoom lag luam thiab cov npoo ntawm kev sib tsoo. Tsis tas li ntawd, nyob rau hauv cov xwm txheej ntawm tshuab tshuab txhav thiab lub zog tso cai, yog tias lub sib tsoo lub log nrog qhov dav dav siv, cov khoom lag luam thiab ntxhib tuaj yeem hloov kho. Txawm li cas los xij, nyob rau hauv cov ntaub ntawv ntawm kev sib tsoo cov khoom siv cua sov, kom tsis txhob kub hnyiab ntawm qhov chaw ua haujlwm thiab khoom tawg tau tsim thiab qhov dav ntawm kev sib tsoo yuav tsum txo qis.