Xov xwm kev lag luam
-
Cov khoom zoo thiab qhov tsis zoo
1. Qhov zoo ntawm cov ntaub ntawv ntoo-yas 1. Lub cev muaj zog ntawm cov ntaub ntawv ntoo-yas yog qhov zoo, uas yog hais tias, nws muaj zog thiab muaj peev xwm loj.Cov khoom siv hauv tsev ua los ntawm cov khoom siv ntoo-yas yog tsis yooj yim rau deform thaum siv, thiab lawv cov dej-pov thawj thiab dej-resistan ...Nyeem ntxiv
