| 单词 | astigmatism |
| 释义 | astigmatism noun[U] medicalspecializeduk/əˈstɪɡ.mə.tɪ.zəm/us/əˈstɪɡ.mə.tɪ.zəm/afaultin thelensof theeyethatreducesthequalityofsight,especiallyafaultthatstopstheeyefromfocusing （尤指妨碍眼睛调焦的）散光，散视Eyesight, glasses & lenses
Examplesofastigmatismastigmatism The full micrograph is subdivided into, say, 2048i2048 pixel patches for which the defocus andastigmatismparameters are determined. From theCambridge English Corpus The axis of theastigmatismis turned by 908 like found in the experiment. From theCambridge English Corpus The beam profile is elliptical due to the strong value ofastigmatismpre-corrected (4l). From theCambridge English Corpus The ray tracing analysis yields a set of characteristics of interest to optical designers, including distortion,astigmatism, and chromatic aberration. From theCambridge English Corpus For instance, two boys had mild or low hyperopia, one had myopia, and one had a relatively importantastigmatism. From theCambridge English Corpus The precompensation approach showed that we were able to introduce 3l ofastigmatismwith no arm for the system. From theCambridge English Corpus Astigmatismis normally seen as a - not always avoidable - flaw in the data. From theCambridge English Corpus These doubts were based upon a fundamental optical phenomenon calledastigmatism, which can be described as follows. From theCambridge English Corpus But such strongastigmatismdoes not dramatically decrease the spatial resolution of the image and still in both directions the spatial resolution is very high. From theCambridge English Corpus Based on these measurements, a ' map ' is generated covering the full micrograph that characterises the defocus andastigmatismvalues over the image. From theCambridge English Corpus Therefore, we introduced a deep deformation of the mirror, pre-correcting a 4lastigmatismaberration, and studied the phase residues at the final distance (36 m) as before. From theCambridge English Corpus The images 3a-3c show the far field spot obtained scanning through focus and image 3d shows the improved far field obtained after correction forastigmatism. From theCambridge English Corpus This demonstrates a lack of significantastigmatism. From theCambridge English Corpus He was asked whether it was not the case when men get wrong glasses that theastigmatismbecomes very much worse. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 Some people have more serious defects—astigmatismand such defects—and have to wear glasses from a very early age, from their twenties right through their lives. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 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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