| 词汇 | diffract |
| 释义 | diffract verb[ T ] uk /dɪˈfrækt/ us /dɪˈfrækt/ to break up light or sound waves by making them go through a narrow space or across an edge衍射（光线、声波等因阻碍而发生的扩散性传播） Physical & chemical processes absorbable absorptive absorptive capacity absorptivity acidification endothermic reaction excitability excitation excite exergonic exothermic exothermic reaction impregnate re-emit reabsorb react reboil recondense scald vaporize As I remember, the color of the sky is due to the scattering of light—light rays being diffracted in the air. But whatever the facts may be, in this respect the statement in the text of the impossibility of representing diffracted color in painting is equally true. diffract | American Dictionarydiffract verb[ T ] us/dɪˈfrækt/ physics to break up light or sound waves by making them go through a narrow space or across an edge diffractionnoun[ U ] physicsus/dɪˈfræk·ʃən/ Examples of diffractdiffract The effect of the trailing edge is to diffract sound waves generated by the leading edge. This avoided any hard edges in the beam, which could diffract and cause damage. The beam illuminates the first grating and is then diffracted. In the case of supersonic aerofoils, the trailing edge diffracts both groups as it catches up with them. It is observed numerically that an initially diffracting beam is accompanied by oscillatory self-focusing of the beam with distance of propagation. As the first approximation, the spectrum was assumed to be diffracted in the first-order only. For some materials, especially diffracting ones, the reflectance measured in some directions varies greatly from the reflectance measured in others. This paper compares the theory with data obtained during experiments with diffracting shocks. With zero flow, diffracted waves were spherical as expected. The objects they encounter will either absorb, reflect or diffract them. Furthermore, the rhinoceros does not suffer from the quality of the marine medium diffusing and diffracting light, as does the dolphin. The supersonic patch and the fan are embedded inside an apparently continuous self-similar diffracted wave pattern behind the triple point. The shock wave is diffracting around the pressure-gauge holder in this figure and the shock wave reflected from the face of the holder is moving back towards the exploding sphere. Equation (4.12) represents a diffracted field, (4.13) incident and diffracted fields and (4.14) incident, reflected and diffracted fields. During the equalization of the pressures behind the reflected and diffracted shock waves, a vortex is formed as the flow separates around the front edge of the gauge holder. 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. |
| 随便看 |
|
反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。