1. Xaiv cov xim, feem ntau kub yaj nplaum muaj ob xim: daj thiab dawb. Feem ntau, daj kub yaj nplaum nplaum zoo dua li cov xim dawb.
2. Qhov kub thiab txias tsis kam, feem ntau hais lus, qhov kub tsis kam ntawm kub yaj nplaum nplaum tsis zoo heev, xws li qhov kub thiab txias, yuav muaj softening; Yog tias qhov kub thiab txias qis dhau lawm, cov nplaum kub yaj yuav ua nkig. Yog li ntawd, thaum xaiv qhov kub yaj, nws yog ib qho tsim nyog yuav tsum coj mus rau hauv tus account qhov kub thiab txias ntawm ib puag ncig.
3. Viscosity, viscosity ntawm kub yaj nplaum yog muab faib ua ob hom, uas yog thaum ntxov viscosity thiab lig viscosity. Tsuas yog thaum ntxov viscosity thiab tom qab viscosity zoo ib yam, nws yog ib qho zoo kub yaj nplaum kom cov khoom sib txuas ruaj khov.
