| 词汇 | lens |
| 释义 | lens noun[ C ] uk /lenz/ us /lenz/ lensnoun[C] (GLASS)a curved piece of glass, plastic, or other transparent material, used in cameras, glasses, and scientific equipment, that makes objects seem closer, larger, smaller, etc.: 镜片，镜头，透镜 a camera with a zoom lens变焦（镜头）照相机 Dorling Kindersley/GettyImages → contact lens隐形眼镜（同 contact lens） sbayram/E+/GettyImages Physics: optics, microscopy & lasers anti-reflection anti-reflective chromatic aberration concentrator converging lens eyepiece field glasses microscopy non-dispersive non-reflecting optical density optics polarization polarize reflective refract speculum mirror spotting scope spyglass transparency You can also find related words, phrases, and synonyms in the topics: Eyesight, glasses & lenses lensnoun[C] (EYE)the part of the eye behind the pupil (= the black hole at the front of the eye) that helps you to see clearly by focusing (= collecting) light onto the retina（眼球的）晶状体 The eye & surrounding area beadily beetling canthus chiasm chiasma eye socket eyeball eyelid glassy limbus macula macula lutea macular monobrow optic nerve staring suborbital superciliary supraoptic supraorbital lens | American Dictionarylens noun[ C ] us/lenz/ lensnoun[C] (GLASS)a piece of glass or plastic having a curved surface in order to change the images that are received after going through it, usually to make them larger, smaller, or clearer: a camera lens Her eyeglasses have thick lenses. lensnoun[C] (EYE)a curved, transparent part of the eye that helps you to see clearly by directing images of light onto the retina (= the back surface of the eye) Examples of lenslens The mid-part of the head is covered with coarse tubercles and expands forwards; the eyes include a few, very large lenses. Transparent lenses caused little distortion of the underlying grid. As in the case of the non-cataractous diabetic lenses, detailed information concerning the diabetic type, disease duration, and treatment was not distributed. Much of this is because the changes identified in the 1960s are viewed through different historical lenses. Later, with the introduction of better-quality lenses, the camera obscura would have been used for painting. The objective lenses required for cathodoluminescence must have long working distances, so choice is often limited and prices high. The overwhelming majority of respondents in both groups used corrective lenses. The overlying mudstone (in places mudstone-siltstone-sandstone alternations) is typically red and includes thin lenses or layers of dirty whitish caliche intervals. A few limestone lenses also occur at the top of the succession. Low-quality lenses collimated the light giving a nearly cubic test section of side 12.7 em. Grainstones forming lenses within reefs have significantly different attributes. Sheets and lenses of medium to coarse sandstones with quartz pebbles alternate with breccia sheets. The pouch could be observed using transmitted light and objective lenses from x 1 to x 20 magnification. However, his model did not include a criterion for formation of new ice lenses. The rat eyes were also enucleated, and the anterior chambers and lenses were removed. See all examples of lens These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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