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.
研究表明，在非均匀磁场情况下，阿尔芬波通过自相互作用也可以形成局域涡旋结构。
The result shows that in the presence of inhomogeneous magnetic field. the shear Alfvenwaves will be able to form localized vortex structures through their self-interactions.
本文研究非均匀磁场中非线性剪切阿尔芬波。
Nonlinear shear Alfven waves in an inhomogeneous magnetic field have been investigated.
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