re·frac·to·ri·ness /rɪˈfrækt(ə)rɪnəs/ 名詞
  失效,耐熔性,不應性,難治(性),頑固性,耐火度,耐火性,無敏感,脫敏感
  Re·frac·to·ri·ness, n. The quality or condition of being refractory.
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  refractoriness
       n : the trait of being unmanageable [syn: unmanageableness, recalcitrance,
            recalcitrancy]