Hauv ntiaj teb niaj hnub no, kev txhawj xeeb ib puag ncig tau dhau los ua qhov tseem ceeb. Txhua tus tab tom sim txo lawv cov pa roj carbon hneev taw thiab ua lawv txoj haujlwm rau ib puag ncig. Ib txoj hauv kev kom ua tiav lub hom phiaj no yog siv cov ntawv tsis muaj cov ntawv luam. Daim ntawv no yog ib hom ntawv tshiab uas tsis siv cov pa roj carbon monoxide thiab yog lwm txoj hauv kev zoo.
Carbonless luam ntawv yog ib txoj hauv kev zoo los txo qhov cuam tshuam ntawm daim ntawv tsim tawm ntawm ib puag ncig. Kev tsim cov ntawv ib txwm xav tau ntau cov peev txheej thiab tsim cov khoom pov tseg ntau. Kev tsim cov ntawv tsis muaj carbonless, ntawm qhov tod tes, tsim cov khib nyiab tsawg thiab siv cov peev txheej tsawg. Qhov no yog vim tias daim ntawv tsis xav tau cov khoom siv carbon.
Cov txheej txheem ntawm kev tsim cov ntawv tsis muaj cov pa roj carbon monoxide kuj tseem huv dua. Kev tsim cov ntawv ib txwm siv nrog ntau yam tshuaj thiab ua rau muaj kuab paug ntau. Carbonless luam ntawv ntau lawm tsis xav tau cov tshuaj phem no thiab tsim cov pa phem tsawg. Qhov no ua rau nws xaiv ib puag ncig-phooj ywg.
Carbonless luam ntawv kuj yog ib qho yooj yim xaiv. Nws tso cai rau koj los tsim ntau cov ntawv luam ntawm ib daim ntawv yam tsis muaj teeb meem ntawm kev siv lub tshuab luam ntawv lossis tshuab luam ntawv. Nrog carbonless luam ntawv, koj tuaj yeem tsim ob peb daim ntawv luam ib zaug, ua rau nws zoo tagnrho rau kev siv lag luam. Qhov no txuag lub sijhawm thiab cov peev txheej, uas yog qhov tseem ceeb hauv ntiaj teb kev nrawm nrawm niaj hnub no.
Lwm qhov laj thawj xav txog kev siv cov ntawv tsis muaj carbonless yog tias nws tuaj yeem rov ua dua. Daim ntawv tuaj yeem siv tau zoo ib yam li lwm hom ntawv. Qhov no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov neeg uas tab tom nrhiav kom txo lawv cov khoom pov tseg thiab cov pa roj carbon hneev taw.
Hauv kev xaus, cov ntawv tsis muaj carbonless yog qhov kev xaiv zoo rau ib puag ncig thiab yooj yim rau cov neeg xav txo lawv qhov cuam tshuam rau ib puag ncig. Nws yog qhov kev xaiv zoo tshaj plaws rau cov lag luam uas xav txo lawv cov khoom pov tseg thiab cov pa roj carbon hneev taw. Zuag qhia tag nrho, nws yog ib kauj ruam zoo rau lub neej yav tom ntej kom ruaj khov dua.