Cov khoom siv yas hose ntau lawm yog siv los tsim ntau yam khoom siv yas hose, uas ua lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam. Yog li, koj puas paub cov khoom tsim cov yam ntxwv ntawm cov khoom siv yas hose? Tom ntej no, cia peb coj koj los nkag siab thiab kawm ua ke.
Cov khoom tsim cov yam ntxwv ntawm cov khoom siv yas hose ntau lawm
1. Cov khoom tsim los ntawm cov khoom siv yas hose ntau lawm muaj cov yam ntxwv ntawm lub teeb yuag, yooj yim tuav, thauj khoom thiab tshem tawm, yooj yim rau kev thauj mus los thiab kev tsim kho, thiab tuaj yeem txuag cov neeg ua haujlwm.
2. Cov khoom siv yas hose cov khoom lag luam muaj cov tshuaj tiv thaiv zoo, cov yas hoses muaj cov kua qaub zoo heev, alkali tsis kam, corrosion kuj, thiab lwm yam, ntau yam kev siv.
3. Cov khoom siv yas hose zoo tuaj yeem tsim cov khoom lag luam zoo yas hose, thaum siv, cov kua nplaum yog me me, ciam teb ntawm cov yas hose yog du, thiab kev sib txhuam ntawm cov kua yog me me.
