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hardening/
'hɑrdnɪŋ
'hɑːdnɪŋ
/
1.noun [Metallurgy]
硬化（作用）；淬火
2.noun
(钢的)硬化处理,淬化;(水泥、油脂等的)硬化
3.noun [Chemistry]
硬化剂
4.noun
硬化剂
5.noun
硬化(症)