pitting
 (ing.)造成坑洞
 pitting 名詞
 孔蝕,藥液對容器的腐蝕
 Pit, v. t. [imp. & p. p. Pitted p. pr. & vb. n. Pitting.]
 1. To place or put into a pit or hole.
    They lived like beasts, and were pitted like beasts, tumbled into the grave.   --T. Grander.
 2. To mark with little hollows, as by various pustules; as, a face pitted by smallpox.
 3. To introduce as an antagonist; to set forward for or in a contest; as, to pit one dog against another.
 ◄ ►
 pit
      n 1: a sizeable hole (usually in the ground); "they dug a pit to
           bury the body" [syn: cavity]
      2: a concavity in a surface (especially an anatomical
         depression) [syn: fossa]
      3: the hard inner (usually woody) layer of the pericarp of some
         fruits (as peaches or plums or cherries or olives) that
         contains the seed; "you should remove the stones from
         prunes before cooking" [syn: stone, endocarp]
      4: a trap in the form of a concealed hole [syn: pitfall]
      5: a surface excavation for extracting stone or slate; "a
         British term for `quarry' is `stone pit'" [syn: quarry,
         stone pit]
      6: lowered area in front of a stage where an orchestra
         accompanies the performers [syn: orchestra pit]
      7: a workplace consisting of a coal mine plus all the buildings
         and equipment connected with it [syn: colliery]
      v 1: set into opposition or rivalry; "let them match their best
           athletes against ours"; "pit a chess player against the
           Russian champion"; "He plays his two children off
           against each other" [syn: oppose, match, play off]
      2: mark with a scar; "The skin disease scarred his face
         permanently" [syn: scar, mark, pock]
      3: remove the pits from; "pit plums and cherries" [syn: stone]
      [also: pitting, pitted]
 pitting
      n : the formation of small pits in a surface as a consequence of
          corrosion [syn: roughness, indentation]
 pitting
      See pit