Cov yam ntxwv ntawm cov iav ntim

1. Cov yam ntxwv ntawm cov iav ntim ntim

Cov yam ntxwv tseem ceeb ntawm cov thawv ntim iav yog: tsis muaj tshuaj lom, tsis muaj ntxhiab, pob tshab, zoo nkauj, zoo barrier zog, thiab rov ua dua tshiab. Nws muaj qhov zoo ntawm kev ua haujlwm kub, siab ua haujlwm, thiab kev ua haujlwm tu. Nws tuaj yeem ua kom tsis muaj menyuam ntawm qhov kub thiab txias thiab khaws cia ntawm qhov kub thiab txias. Nws yog qhov tseeb vim tias nws muaj ntau yam zoo uas nws tau dhau los ua cov khoom ntim rau ntau yam dej haus, xws li npias, txiv hmab txiv ntoo tshuaj yej, thiab kua txiv hmab txiv ntoo.

2. Dab tsi yog qhov txiaj ntsig ntawm kev siv iav ua lub thawv?

1. Cov khoom siv iav muaj cov khoom thaiv zoo, uas tuaj yeem tiv thaiv cov pa oxygen thiab lwm yam gases los ntawm invading cov ntsiab lus, thiab tib lub sij hawm tiv thaiv cov volatile Cheebtsam ntawm cov ntsiab lus ntawm evaporating rau hauv cov huab cua.
2. Cov iav fwj tuaj yeem siv ntau zaus los txo cov nqi ntim khoom.
3. Cov thawv ntim iav tuaj yeem xaiv ntau yam xim raws li kev cia khoom.
4. Cov iav fwj muaj kev nyab xeeb thiab huv si, muaj kev tiv thaiv corrosion zoo thiab acid corrosion kuj, thiab tsim nyog rau ntim cov kua qaub (xws li txiv hmab txiv ntoo thiab zaub kua txiv, thiab lwm yam).