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filter    音标拼音: [f'ɪltɚ]
vt. 过滤,渗透,走漏
vi. 滤过,渗入
n. 过滤器,筛选
n. 滤波器,过滤器,滤光器

过滤,渗透,走漏滤过,渗入过滤器,筛选滤波器,过滤器,滤光器

filter
过滤器 FLT

filter
过滤器 滤波器

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
v 1: remove by passing through a filter; "filter out the
impurities" [synonym: {filter}, {filtrate}, {strain}, {separate
out}, {filter out}]
2: pass through; "Water permeates sand easily" [synonym:
{percolate}, {sink in}, {permeate}, {filter}]
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" [synonym: {trickle}, {dribble}, {filter}]

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.
[1913 Webster]

{Filtering paper}, or {Filter paper}, a porous unsized paper,
for filtering.
[1913 Webster]


Filter \Fil"ter\, v. i.
To pass through a filter; to percolate.
[1913 Webster]


Filter \Fil"ter\, n.
Same as {Philter}.
[1913 Webster]


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.
[1913 Webster]

{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}.
[1913 Webster]

87 Moby Thesaurus words for "filter":
bleed, bolt, butterfly, cheesecloth, clarifier, clarify, clean,
clear, cloth, colander, condense, cradle, cribble, decrassify,
depurate, diffusing screen, discharge, distill, drain, dribble,
drip, dripple, drop, edulcorate, effuse, eliminate, elute, emit,
essentialize, exclude, excrete, exfiltrate, extract, extravasate,
exudate, exude, filtrate, frosted glass, frosted lens, gauze,
gelatin filter, give off, ground glass, gurgle, leach, lens hood,
light filter, lixiviate, lixiviator, membrane, ooze, pass through,
percolate, percolator, purifier, purify, rectify, reek, refine,
refiner, refinery, riddle, rocker, run through, screen, seep,
separate, sieve, sift, sifter, smoked glass, spiritualize, spurtle,
stained glass, strain, strainer, sublimate, sublime, transude,
trickle, try, weed out, weep, winnow, winnowing basket,
winnowing fan, winnowing machine

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}]


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