1. Cov khoom siv tshuaj xyuas sab hauv: qhov dav sib txawv, qhov sib txawv ntawm qhov sib txawv ntawm ib cheeb tsam, qhov sib txawv ntawm qhov sib txawv ntawm ib cheeb tsam, tawg lub zog, ncua ntev ntawm tawg, tawg lub zog, sib npaug pore txoj kab uas hla, ntsug permeability coefficient, tuab
2. Kev pom cov khoom zoo: qhov, txiav tsis zoo, xim sib txawv, pob qij txha, frits, teeb meem txawv teb chaws, koom tes pabcuam tsis zoo thiab quav quav.
3. Kev xaiv cov khoom ntsuas: qhov ua kom tawg, ua kom lub zog muaj zog, qhov ntev thiab lub zog sib piv piv, hauv dej dav hlau ntws, ntub lub vijtsam qhov siab, sib txhuam coefficient, UV tsis kam, acid-puag tsis kam, oxidation tsis kam, tiv taus kub, hnav ua haujlwm, ua haujlwm zoo , nplaim hluav taws ua tau zoo, ua kom muaj zog sib txuas, ua kom cov roj ntws tau zoo, txuas ntxiv lub zog, txuas ntxiv lub zog txuas ntxiv Elongation thaum tawg, thiab lwm yam