in·crus·ta·tion /ˌɪnˌkrʌsˈteʃən/
 用硬殼包,鑲嵌,硬殼


 in·crus·ta·tion /ˌɛn-/ 名詞
 外模化石,被殼,硬殼,痂,結硬殼,結痂,水垢,積垢


 In·crus·ta·tion n.
 1. The act of incrusting, or the state of being incrusted.
 2. A crust or hard coating of anything upon or within a body, as a deposit of lime, sediment, etc., from water on the inner surface of a steam boiler.
 3. Arch. A covering or inlaying of marble, mosaic, etc., attached to the masonry by cramp irons or cement.
 4. Fine Arts Anything inlaid or imbedded.

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 incrustation
      n 1: the formation of a crust [syn: encrustation]
      2: a hard outer layer that covers something [syn: crust, encrustation]
      3: a decorative coating of contrasting material that is applied
         to a surface as an inlay or overlay [syn: encrustation]