Dab tsi yog qhov ntev nominal ntawm cov yeeb nkab carbon?

Qhov loj ntawm cov yeeb nkab hlaufeem ntau yog qhia hauv nti lossis millimeters, thiab cov yeeb nkab hlau qhov loj me thiab qhov ntau thiab tsawg feem ntau yog raws li cov qauv thiab cov kev cai sib txawv. Piv txwv li, hauv Tebchaws Meskas, cov yeeb nkab hlau qhov loj me feem ntau yog raws liCov qauv ASTM, thaum nyob hauv Tebchaws Europe, qhov loj ntawm cov yeeb nkab hlau yuav ua raws liCov qauv EN.

Feem ntau cov yeeb nkab hlau loj xws li sab nraud, phab ntsa tuab, thiab ntev. Sab nraud feem ntau yog ib qho ntawm cov qauv loj feem ntau, thaum phab ntsa tuab thiab ntev ntawmyeeb nkab hlaukuj yog cov yam tseem ceeb uas yuav tsum xav txog thaum xaiv cov yeeb nkab hlau zoo. Tsis tas li ntawd, thaum xam qhov hnyav ntawm cov yeeb nkab hlau, koj tuaj yeem siv lub tshuab xam qhov hnyav ntawm cov yeeb nkab hlau kom sai thiab raug xam qhovqhov hnyav ntawm cov kav hlau, uas yog ib qho pab tau zoo heev rau kev yuav khoom siv thiab kev npaj thauj mus los hauv cov haujlwm engineering.