1, kom muaj lub zog txaus, mob tawv nqaij, me me zoo, lub cev nyhav, thiaj li ua kom muaj zog hauv qis qis tshaj plaws.
2, zoo thermal conductivity, kub kub, siab siab, corrosion, muaj txaus kub dissipation peev, qhov chaw me me cua sov.
3. Yuav tsum muaj qhov sib txawv ntawm kev sib txhuam ntawm qhov piston thiab phab ntsa piston.
4, qhov hloov ntawm qhov kub thiab txias, qhov loj me, qhov hloov pauv me me, thiab lub tog raj kheej kom muaj qhov sib txawv. 5, lub coefficient ntawm thermal expansion yog me me, qhov kev nqus yog me me, nrog kev txo kom zoo dua thiab thermal lub zog.
