Dab tsi yog cov khoom siv rau lub cev muaj zog thiab vim li cas?

High-power motors yog cam khwb cia hlau, thiab low-power motors yog aluminium alloy casting.

Feem ntau, lub tshuab hluav taws xob yog nrum nrog grey cam khwb cia hlau.

Feem ntau los yog tag nrho cov pa roj carbon nyob rau hauv grey cam khwb cia hlau muaj nyob rau hauv daim ntawv ntawm flake graphite, thiab cov pob txha yog grey. Raws li cov ntaub ntawv sib txawv ntawm graphite, grey cam khwb cia hlau tuaj yeem muab faib ua peb hom, grey cam khwb cia hlau, malleable cam khwb cia hlau thiab ductile hlau. Peb hom no yog siv los ua vaj tse nyob. Tus nqi qis thiab tsis yooj yim rau deform.