Cov zaub mov ntim khoom raws li ib lub pob ntawm cov khaub ncaws ntawm tus kheej, yuav tsum muaj kev tiv thaiv ntau thiab kev nyab xeeb.
Cov zaub mov tsis zoo li lwm cov khoom, lub pob ntau npaum li ntau tau, thiab cov khoom siv hluav taws xob, iav thiab lwm yam khoom tsis zoo li qub, cov khoom noj yog yooj yim rau cov khoom noj tsis yooj yim, cov hnab ntim khoom noj yuav tsum tsis txhob cia cov cua permeability xwb, Nws tus kheej yog ib qho contradiction.
Tuam Tshoj tus qauv rau cov khoom noj khoom haus, cov tshuaj pleev ib ce porosity, cov khaubncaws sab nraud povtseg thiab cov nqi yuav tsum tau khwv, lawv cov phom ntim yuav tsum muaj peb lossis tsawg dua, thiab cov khoom ntim tsis tuaj yeem ntau dua li rau caum feem pua, ntawm tus nqi ntawm cov khoom muag. Qhov no kuj yog rau ntau yam khoom noj, xws li qee cov zaub mov: tshwj xeeb tshaj yog lub hli ncuav, dej haus thiab khoom txom ncauj, feem ntau muaj ntau ntim tus neeg xav, lawv cov nqi ntim ntau tshaj qhov nqi ntawm qhov khoom xwb tsis yog nyiaj yog nyiaj, thiab noj Tom qab ntawd , cov khoom ntim khoom tau muab pov tseg, ua rau tsis muaj kev ruaj khov.
Rau cov zaub mov ntau tshaj, cov neeg tau txais kev pab yuav tsum raug xaiv kom zoo, vim hais tias cov khoom siv feem ntau yog qhov tsawg, tsis muaj nqis
