他们应当去掉场极板和氧化层，并在整个区域淀积一层薄的铝薄膜。
They should remove the field plate and oxide and deposit a thin aluminum film over this region.
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.
由于所研究的压电陶瓷片是由压电陶瓷层和薄铜片两种不同材料所组成，因此不仅存在自由度的耦合问题，同时还存在不同物理场的耦合问题。
This piezoelectric ceramic piece is composed of two kinds of different materials, there exits coupling question of degree of freedom, and the coupling of different physical field.
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