| 词汇 | example_english_spontaneous-emission |
| 释义 | spontaneous emissioncollocation in Englishmeanings of spontaneousand emissionThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with emission. spontaneous adjective uk /spɒnˈteɪ.ni.əs/ us /spɑːnˈteɪ.ni.əs/ happening or done in a natural, often sudden way, without any planning or without ... See more at spontaneous emission noun uk /iˈmɪʃ.ən/ us /iˈmɪʃ.ən/ the act of sending out gas, heat, ... See more at emission Examples of spontaneous emissionThese 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. The excited atom interacts with the vacuum fluctuations which cause the spontaneousemission of radiation. This means that the most general condition for linear radiative instability requires that the spontaneousemission exceeds the absorption minus the stimulated emission. Spontaneousemission is too weak to activate the postsynaptic membrane. The amplified spontaneousemission background intensity is at least 8 orders of magnitude below that of the main pulse. The spontaneousemission and gain formula are derived and compared with the case of the auxiliary undulator discussed in the previous section. The calculation does not include spontaneousemission, but classical electrodynamics tells us that oscillating charges will emit electromagnetic radiation at the frequency of oscillation. Accordingly, we assume spontaneousemission into just one mode to be the starting condition for the time-domain model as well. Phenomenologically, the couplings to other degrees of freedom in our system, and the effect of spontaneousemission may (to a certain extent) be included using a relaxation time approach. Rutkevich et al. (1996) found that the spontaneousemission of sound waves from strong shocks in metals results in corrugation of a planar shock front. The thin solid line, the broken line, and the thick solid line denote the transition by electron collision, the spontaneousemission, and the absorption of the photon, respectively. This case corresponds to pure acoustic, entropic and vorticity waves which are neither amplified nor damped; it corresponds in fact to a spontaneousemission of sound by a discontinuity. Amplified spontaneousemission was also investigated to evaluate the prepulse intensity on a target produced by the amplifiers chain. The use of the previous relations allows a fairly simple understanding of what is actually needed to realize a self amplified spontaneousemission free electron laser source. Again s is the fraction of the spontaneousemission into the laser mode. Amplified spontaneousemission, overheating and round-trip loss seem to be the most important processes that limit the power of disk lasers. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If the rate of spontaneousemission, or any of the other rates are fast, the lifetime is short. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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. Want to learn more? Go to the definition of spontaneous Go to the definition of emission See other collocations with emission |
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。