"carburize:To treat, combine, or impregnate with carbon, as when casehardening steel."

,:与一起处理,与混合或充满,如将钢的表面粹火.

Casehardening involves a change of surface properties to produce ahard,wear-resistant shell about a tough,fracture-resistant core.

表面含一个高度、耐磨性的壳以及高韧性的芯。