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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
The cosmic microwave background (CMB) is a relic radiation of the Big Bang and as such it contains a wealth of cosmological information.
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Compounds 3-8 were also synthesized in good yields using microwave-mediated synthesis under solvent free conditions.
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The feeding-sample system used by microwave plasma torch atomic emission spectroscopy (MPT-AES) is the pneumatic nebulization system; its efficiency, however, is not good.
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N-Methyl-2-(N-ethylcarbozole)-fulleropyrro lidine and N-methyl-2-(4'-N,N-diphenylaminophenyl)-fulleropyrrolidine were synthesized by 1,3-dipolar cycloaddition under microwave irradiation, which were characterized by MS, 1H NMR, IR and UV-Vis.
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The precursors of Fe2O3-SiO2 mixed oxides prepared through co-precipitation method were modified by microwave hydrothermal treatment for the first time.
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| | In the present work, a theory of multiple bunching including the effect of space-charge is developed through the use of space-charge wave concept. The results contain Feenberg's kinematic theory as a special case and reveal characteristics of multiple bunching system that could not be obtained from the kinematic approach.The theory will find applications in microwave electronic devices and some examples of practical significance are discussed. | | 本文采用空间电荷波的观念,讨论了包括电子相互作用的多次聚束问题。所得结果,在电流接近以零为极限时,简化成费恩柏格(E.Feenberg)由运动学观点出发的结果。但是空间电荷效应的包括,显示了多次聚束系统一些不能由运动学方法得到的特徵。 本文的分析,可以应用在一系列的微波电子器件上。文中对这方面,也提供了一些具体的方向。 | | 文摘来源 | | Three different forms of coupling through a small hole are treated by approxi mate methods, which are justified from good physical reasoning. These are the end on coupling between a rectangular and a circular waveguides, the coupling between a TE10 mode in a rectangular waveguide and a TM120 mode in a circular cavity through a circular hole in the side wall of the circular cavity and the coupling between a TE01 mode in a rectangular waveguide and a TMmn mode in circular waveguide through a circular hole in ... | | 本文讨论了三种不同系统的小孔耦合的近似解法:矩形波导与圆柱波导的同轴耦合,矩形波导中的TE_(10)型波与圆柱谐振腔中的TM_(120)型波间的耦合和矩形波导中的TE_(10)型波与圆柱波导中的TM_(mn)型波间的耦合。通过这几个问题的解法,我们希望读者可以看到处理复杂微波元件问题时所需的从物理概念出发的灵活应用已有方法的必要性。这里提供的几个公式有着广泛的应用范围而是在现有文献中探讨得不够的。这里介绍的方法可以应用到其他新的微波网络问题中去。 | | 文摘来源 | | The theory of Clogston and his coworkers[11] on the line width of ferromagnetic resonance is derived by using thermodynamical retarded Green functions. The results obtained are applicable for a wide range of temperatures. The susceptibility tensor and the change of the transverse component of magnetization following a sudden removal of the microwave field are calculated. | | 本文应用热力学的推迟格临函数,重新推导了克洛格斯顿等人的铁磁共振峯宽理论。我们所得到的结果适用于广阔的温度范围,文中计算了磁化率张量和去掉微波场后横向磁化强度随时间的变化。 | | 文摘来源 | |   | | << 更多相关文摘 |
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