因此，对于超辐射返波管的研究具有非常现实的意义。
提出一种新型相对论返波管同轴引出相对论返波管结构。
This paper brings forth a new relativistic backward wave oscillator with coaxial extractor.
分析结果表明：采用该结构的返波管能够很好地改善模式竞争。
The results show that the mode competition is much improved with the suggested new structure.
本文运用粒子模拟和实验研究相结合的方法对相对论返波管中的超辐射机理进行了系统的研究。
The superradiance mechanism in RBWO was studied systematically by associated method of particle simulation and experiment in this dissertation.
进而建立了非均匀波纹慢波结构返波管的线性理论，给出非均匀慢波结构返波管中起振电流的计算表达式。
Furthermore, we established a linear theory of the non-uniform slow wave structures and formulated the expression of the starting current.
进而建立了非均匀波纹慢波结构返波管的线性理论，给出非均匀慢波结构返波管中起振电流的计算表达式。
Furthermore, we established a linear theory of the non-uniform slow wave structures and formulated the expression of the starting current.
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