Xyoo tsis ntev los no, lub thawv ntim khoom lag luam tsom rau cov ntim cov khoom lag luam nrov tshaj plaws, tshwj xeeb yog qee cov qib ntim ntim ntoo ntim thawv nrog ntau lawm.
Cov thawv ntoo tuaj yeem tiv thaiv cov khoom hauv lub thawv los ntawm kev puas tsuaj, xws li cov xau, pov tseg, tub sab, poob, tawg, doping, shrinkage thiab discoloration. Lub sijhawm los ntawm cov khoom lag luam mus rau kev siv cov khoom, kev tiv thaiv kev tiv thaiv tseem ceeb heev. Yog tias lub thawv ntoo tsis tiv thaiv cov khoom hauv, qhov kev ntim khoom no yog kev poob siab.
Lub thawv ntoo txhawm rau txhawm rau txheeb xyuas, lub thawv ntoo yuav tsum tau qhia cov khoom qauv, qhov ntau, cov khoom lag luam thiab lub npe ntawm cov chaw tsim khoom lossis cov chaw muag khoom. Cov thawv ntoo tuaj yeem pab cov thawj coj hauv tsev lag luam kom paub cov khoom lag luam kom raug, thiab tseem pab cov neeg siv khoom kom pom qhov lawv xav tau.
Cov thawv ntoo pab txhawb kev muag qee hom, tshwj xeeb hauv khw xaiv. Hauv khw muag khoom, lub thawv ntoo nyiam cov neeg siv khoom saib xyuas thiab tuaj yeem tig nws txoj kev xav mus rau qhov txaus siab. Qee tus neeg xav, "txhua lub thawv ntoo yog daim phiaj xwm nrog qhov ua kom zoo tshaj plaws." "Kev ntim khoom zoo thiab zoo tuaj yeem txhim kho kev nyiam ntawm cov khoom tshiab, thiab tus nqi ntawm lub thawv ntim nws tus kheej kuj tseem tuaj yeem ua rau cov neeg tuaj yeem txhawb nqa mus yuav qee yam khoom.
