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case harden
avia.	箱体硬化
fish.farm.	结壳
mech.	表面硬化【淬火】
met.	表面硬化; 表面淬火; 表面渗碳硬化法
tech.	热处理; 木材干曲
case-harden ['keɪs'hɑ:dn]
gen.	使表面渗碳硬化; 渗碳; 表面淬火〔硬化〕
auto.	【动】渗碳; 使表面硬化淬火
earth.sc.	表面硬度
English thesaurus
Case Harden
mil., abbr.	CH

case- harden: 3 phrases in 2 subjects

Architecture	2
Business	1