采用五点差分法计算轴对称静电透镜子午面上电位分布,再从普遍轨迹方程求得的电子轨迹出发得到透镜焦点和球差。
The five points difference method is used to calculate the voltage distribution on the meridian surface of axial-symmetrical electrostatic lens.
在平面温度应力问题和热屈曲问题的计算中,采用了精度更高的五节点差分法来进行计算。
We adopt five nodes difference method to solve thermal stress problem and thermal buckling problem, because this method is more precise.
在平面温度应力问题和热屈曲问题的计算中,采用了精度更高的五节点差分法来进行计算。
We adopt five nodes difference method to solve thermal stress problem and thermal buckling problem, because this method is more precise.
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