Hnav ntawm qhov sib koom ntawm lub hauv paus thiab ntu ntawm lub pob zeb txiav saw hniav
Hnav ntawm qhov sib koom ntawm lub hauv paus thiab ntu ntawm lub pob zeb-txiav saw hniav yog ib qho teeb meem tshwm sim hauv cov txheej txheem pob zeb. Qhov no feem ntau tshwm sim vim cov khib nyiab abrasive raug daig hauv qhov txiav, ua rau hnav nrawm dua. Txhawm rau daws qhov teeb meem no, cov hniav tiv thaiv tuaj yeem ntsia tau rau ntawm qhov chaw tshwj xeeb ntawm lub hauv paus ntawm cov saw hniav.
Kev siv cov dej txias txias txias ua kom cov txheej txheem tshem tawm cov khib nyiab thiab txuas ntxiv lub neej kev pab cuam ntawm cov saw hniav.
