Kev piav qhia ntawm Cov Phiaj Yas

Cov txiag ntoo yas: Cov txiag ntoo yog ua los ntawm cov yas, thiab cov yas yog cov khoom siv sib txuas ua ke, uas tuaj yeem hloov cov duab ntawm lub cev dawb. Yas yog cov khoom siv tau los ntawm polymerizing ib lub monomer raw khoom los ntawm kev sib txuas lossis cov tshuaj tiv thaiv kev hws, thiab yog tsim los ntawm cov khoom siv hluavtaws thiab cov muab tub lim, yas, lub tshuab ua kom khov kho, roj nplua nyeem, xim thiab lwm yam, thiab nws cov khoom tseem ceeb yog hluavtaws. cob.