hardening
 硬化;□煉;淬火;硬化劑


 hard·en·ing /ˈhɑrdnɪŋ, ṇɪŋ/ 名詞
 硬化


 Hard·en·ing, n.
 1. Making hard or harder.
 2. That which hardens, as a material used for converting the surface of iron into steel.

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 Hard·en v. t. [imp. & p. p. Hardened p. pr. & vb. n. Hardening ]
 1. To make hard or harder; to make firm or compact; to indurate; as, to harden clay or iron.
 2. To accustom by labor or suffering to endure with constancy; to strengthen; to stiffen; to inure; also, to confirm in wickedness or shame; to make unimpressionable. “Harden not your heart.”
    I would harden myself in sorrow.   --Job vi. 10.


 hardening
      n 1: abnormal hardening or thickening of tissue
      2: the process of becoming hard or solid by cooling or drying
         or crystallization; "the hardening of concrete"; "he
         tested the set of the glue" [syn: solidifying, solidification,
          set, curing]
      3: the act of making something harder (firmer or tighter or
         more compact)