资料来源 : pyDict

过滤,渗透,走漏滤过,渗入过滤器,筛选滤波器,过滤器,滤光器

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Filter \Fil"ter\, v. t. [imp. & p. p. {Filtered}; p. pr. & vb.
   n. {Filtering}] [Cf. F. filter. See {Filter}, n., and cf.
   {Filtrate}.]
   To purify or defecate, as water or other liquid, by causing
   it to pass through a filter.

   {Filtering paper}, or {Filter paper}, a porous unsized paper,
      for filtering.

Filter \Fil"ter\, n. [F. filtre, the same word as feutre felt,
   LL. filtrum, feltrum, felt, fulled wool, this being used for
   straining liquors. See {Feuter}.]
   Any porous substance, as cloth, paper, sand, or charcoal,
   through which water or other liquid may passed to cleanse it
   from the solid or impure matter held in suspension; a chamber
   or device containing such substance; a strainer; also, a
   similar device for purifying air.

   {Filter bed}, a pond, the bottom of which is a filter
      composed of sand gravel.

   {Filter gallery}, an underground gallery or tunnel, alongside
      of a stream, to collect the water that filters through the
      intervening sand and gravel; -- called also {infiltration
      gallery}.

Filter \Fil"ter\, v. i.
   To pass through a filter; to percolate.

Filter \Fil"ter\, n.
   Same as {Philter}.

资料来源 : WordNet®

filter
     v 1: remove by passing through a filter; "filter out the
          impurities" [syn: {filtrate}, {strain}, {separate out},
          {filter out}]
     2: pass through; "Water permeates sand easily" [syn: {percolate},
         {sink in}, {permeate}]
     3: run or flow slowly, as in drops or in an unsteady stream;
        "water trickled onto the lawn from the broken hose";
        "reports began to dribble in" [syn: {trickle}, {dribble}]

filter
     n 1: device that removes something from whatever passes through
          it
     2: an electrical device that alters the frequency spectrum of
        signals passing through it

资料来源 : Free On-Line Dictionary of Computing

filter
     
        1. (Originally {Unix}, now also {MS-DOS}) A program that
        processes an input data stream into an output data stream in
        some well-defined way, and does no I/O to anywhere else except
        possibly on error conditions; one designed to be used as a
        stage in a {pipeline} (see {plumbing}).  Compare {sponge}.
     
        2. ({functional programming}) A {higher-order function} which
        takes a {predicate} and a list and returns those elements of
        the list for which the predicate is true.  In {Haskell}:
     
        	filter p []     = []
        	filter p (x:xs) = if p x then x : rest else rest
        			  where
        			  rest = filter p xs
     
        See also {filter promotion}.
     
        [{Jargon File}]