case hardening

常見例句

Due to their low carbon content, these steels cannot be hardened except by case hardening.
由于它含有較少的碳，這些鋼不能被硬化，只能進(jìn)行表面硬化。
This hardness ranges from 900 to 1,100 Brinell, which is considerably higher than that obtained by ordinary case hardening.
其硬度范圍為900 到1，100 布氏硬度，這遠(yuǎn)高于普通表面硬化所獲得的硬度。
This impervious layer or boundary will retard the free diffusion of moisture. This condition is referred to as case hardening.
這一不透氣的殼層(或邊界層)會(huì)阻滯水分自由擴(kuò)散，這種情形稱為表面硬化。