文中提出用高斯列主元消去法与最优化方法相结合的技术求解模拟电荷方程组，是提高精度和保证收敛的一种有效算法。
The combined method of gnass elimination and optimization is used to solve the equation of charge-simulation, and it is an effective method for increasing the accuracy and assuring the convergence.
列阵透镜由多个列阵元拼接而成，用以改善主透镜焦点附近能量分布的均匀性。
Lens array consists of many array units, which can improve energy distribution uniformity around the focus of main lens.
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