Tus kheej-tapping qhob ntsia hlau yog tsim tshwj xeeb rau kev nkag mus rau hauv cov pob zeb lossis cov chaw meryonry. Cov screws no muaj cov xov txawv uas tso cai uas tso cai rau lawv los txiav ntawm cov pob zeb ua kom zoo li cov screats, ua raws cov txheej txheem ntawm cov pob zeb Nws yog ib qho tseem ceeb tias qhov ntev ntawm cov ntsia hlau yog txaus rau cov khoom siv uas koj xav tau nkag rau hauv cov ntsia hlau los yog me me. Laum ib lub qhov tsav mus rau hauv cov pob zeb lossis meonry nto ntawm qhov chaw cim. Qhov txoj kab uas hla yuav tsum phim cov kab uas hla ntawm cov ntsia hlau lossis hmoov av los ntawm kev siv txhuam lossis tshuab nws tawm nrog cua compressed. Qhov no yuav pab ua kom muaj kev nkag mus rau qhov kev nkag mus thiab tuav ntawm tus kheej-tapping qhob ntsia hlau mus rau lub laum lossis ib tus ntiv tes tsim nyog. Thov khov kho lub siab thiab maj mam tig lub ntsia hlau moos ciav hlau kom tsis txhob muaj cov xov tooj ntsia hlau. Tsis txhob ua kom ntsuas, raws li nws yuav ua kom lub pob zeb ua kom tsis muaj zog lossis ua kom muaj kev nyab xeeb rau iav thiab cov hnab looj tes ua haujlwm nrog pob zeb ua haujlwm. Nws tseem yog ib qho tseem ceeb kom nyeem thiab ua raws cov chaw tsim khoom cov lus qhia rau hom tshwj xeeb thiab hom ntawm tus kheej tapping qhob ntsia hlau tau siv.