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计算机科学技术 静电聚焦 It appears that the computational efficiency and accuracy of the multigrid method are better than finite difference method. This method can be applied to design and analyze the electrostatic field for image tubes and camera tubes with electrostatic focusing. 其计算精度和效率均优于传统的有限差分法,故可广泛应用于分析设计静电聚焦像管的电子光学系统及摄像管电子枪的发射系统等。
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