推导了边界内电场势函数和力函数的解析表达式，以及非线性场表达式；
The paper reports analytic expressions on the electric potential and field lines, and the non linear field expressions derived from the potential function.
利用等离子体流体模型和线性场理论，分别导出了无限薄环形等离子体填充圆柱波导和无限薄环形等离子体填充波纹波导中的色散关系。
By means of fluid model and linear field theory, the dispersion equation of the electromagnetic wave propagation along a cylindrical waveguide filled with an infinitely thin annular plasma.
衣阿华州立大学设有一台线性加速器，连往屠宰场，另外还有一间实验室，研究人员可以在其中检查辐照产品。
Iowa State University operates a linear accelerator attached to a slaughterhouse and a lab where researchers can examine the irradiated products.
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