模拟有空间由荷存在时的电子轨迹，需要把有注流元件的电介槽与轨迹仪配合使用。在此过程中，计算注入电流的工作极为繁复，因为它需要知道各点的电子速度，也就是需要知道各点电位分布的情况。本文采用了使轨迹仪在描绘轨迹时自动打点的办法，减轻了工作量，从而加速了解题过程。 Simulating the electronic traces of space when the charge is present requires the use of a cell with a current-injecting element in conjunction with the tracker. In this process, the work of calculating the injection current is very complicated, because it needs to know the electron velocity of each point, that is, it needs to know the potential distribution of each point. In this paper, the tracker automatically traverses the trajectory while reducing the workload, thus accelerating the problem-solving process.