Cov yam ntxwv ntawm yas:
Cov yas feem ntau yog lub teeb, ruaj khov, thiab yuav tsis xeb;
Kev cuam tshuam zoo tiv thaiv;
Muaj kev pom zoo thiab hnav tsis kam;
Rwb thaiv tsev zoo thiab cov thermal conductivity tsawg;
Feem ntau, kev tuaj yeem ua xim thiab xim yog qhov zoo, thiab tus nqi ua tiav yog tsawg;
Cov yas feem ntau muaj cov cua sov tsis zoo, ua kom sov siab ntxiv, thiab yooj yim rau hlawv;
Kev ruaj ntseg tsis zoo thiab yooj yim rau deform;
Cov yas feem ntau tsis muaj qhov kub tsis kam tiv taus, ua rau tawg ntawm qhov kub tsawg, thiab yooj yim rau hnub nyoog;
Qee cov yas tau yooj yim yaj hauv cov kuab tshuaj.
