词汇 | speckle |
释义 | speckle noun[ Cusually plural ] uk /ˈspek.əl/ us /ˈspek.əl/ a very small mark of a different colour from the area around it, usually found with a large number of other marks of the same type: (表面上的)斑点,色斑 A blackbird's egg is blue with brown speckles on it.乌鸫的蛋是蓝色的,上面有棕色的斑点。 Synonyms fleck patch spot Dirt & untidiness bloodstain clutter contaminant contamination crud fleck grime grunge gunge gunk muck pollutant polluter recontamination scrappiness scruff shambles slime slob smear speckle verb[ T ] uk /ˈspek.əl/ us /ˈspek.əl/ (of small marks that are of a different colour to the area around them) to cover something: A few drops of blood speckled his face. Black mould infested the drawers, speckling her clothes with dark spots. to be spread across an area or place, with gaps in between: Heavy machinery speckles the grounds, as construction crews start on the foundation. Only 17,612 people turned up to speckle an arena which was built for 73,000. to be present in something: "Good causes" speckled the agenda like sesame seeds on a bagel. Small-scale breeders have speckled the Midwest and South since the market for purebred pet dogs exploded after World War II. Related word speckled Covering and adding layers additive asphalt bestrew bind blanket blindfold fall over film film over gum gum something up inlaid retile retread seasoned slap slap something on smother something in/with something tent wax You can also find related words, phrases, and synonyms in the topics: Existing and being Examples of specklespeckle At this stage, these and other concepts are still being developed to increase the level of speckle smoothness for direct drive. From the transmission geometry of a small-angle experiment it is obvious that the transverse coherence length is the key factor that determines speckle. In these experiments, however, the average power in a speckle was of the order of 3% of the critical power for self-focusing. The instantaneous focal spot intensity is a highly nonuniform speckle. The target then integrates over a large number of uncorrelated speckle patterns and therefore "experiences" smoother irradiation. The wide divergence laser beam eliminates the speckle patterns caused by the phase plates. The very first section features a typically multi-layered texture with helter-skeltering violin scales speckled with pizzicato strings, brass and keyboards. The final chapter is on fundamental limits in photoelectric detection of light, and different kinds of interferometry, including speckle interferometry, are discussed in this context. The # 2 reduction due to the overlap of the two speckle patterns is readily discerned. At the target, these beamlets interfere and create a speckle pattern with a broad range of spatial frequencies. In some lights the under surface of the legs appears distinctly and regularly speckled, a character due evidently to the regular arrangement of the scales. The high spatial frequency components in the speckle pattern caused by random phase irradiation are removed by incoherent overlapping of broadband laser light. A pattern matching algorithm allows the operator to track speckles occurring naturally in the myocardium. This staining pattern was comparable with controls except for small debris-like speckles visible in some blastomeres. The single speckle, or hot spot, is the simplest irreducible element for studying laser plasma interactions. 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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