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aperture    音标拼音: ['æpɚtʃɚ]
n. 孔,穴,缝隙,光圈,孔径

孔,穴,缝隙,光圈,孔径

aperture
小孔


aperture
孔径; 口径

aperture
孔径 口径

aperture
n 1: a device that controls amount of light admitted
2: a natural opening in something
3: an man-made opening; usually small

Aperture \Ap"er*ture\ (?; 135), n. [L. apertura, fr. aperire.
See {Aperient}.]
1. The act of opening. [Obs.]
[1913 Webster]

2. An opening; an open space; a gap, cleft, or chasm; a
passage perforated; a hole; as, an aperture in a wall.
[1913 Webster]

An aperture between the mountains. --Gilpin.
[1913 Webster]

The back aperture of the nostrils. --Owen.
[1913 Webster]

3. (Opt.) The diameter of the exposed part of the object
glass of a telescope or other optical instrument; as, a
telescope of four-inch aperture.
[1913 Webster]

Note: The aperture of microscopes is often expressed in
degrees, called also the angular aperture, which
signifies the angular breadth of the pencil of light
which the instrument transmits from the object or point
viewed; as, a microscope of 100[deg] aperture.
[1913 Webster]

89 Moby Thesaurus words for "aperture":
access, aisle, alley, ambulatory, arcade, artery, avenue, bore,
breach, break, broaching, cavity, channel, chasm, check, chink,
clearing, cleft, cloister, colonnade, communication, conduit,
connection, corridor, covered way, crack, crevice, cut, defile,
disclosure, discontinuity, exit, fenestra, ferry, fissure, fistula,
fontanel, foramen, ford, gallery, gap, gape, gash, gat, gulf,
hiatus, hole, hollow, inlet, interchange, intersection, interstice,
interval, junction, lacuna, lane, laying open, leak, opening,
opening up, orifice, outlet, overpass, pass, passage, passageway,
perforation, pinhole, pore, portico, prick, puncture,
railroad tunnel, rupture, slash, slit, slot, space, split, stoma,
throwing open, traject, trajet, tunnel, uncorking, underpass,
unstopping, vent, yawn


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