这个模拟的时间步长如图5所示，但是实际的可视化会更加有趣。
Time steps of this simulation are shown in Figure 5, although the real-time visualization is much more interesting.
根据电热耦合模拟的特点，本程序采用了组解耦法和异时间步长法两种算法。
According to the characteristics of electro thermal simulation, two new methods, group decoupled (group Gummel) method and different time step method, are realized in this program.
通过模拟结果与解析解的比较可以看出，在时间步长选择合适的情况下，集中热容矩阵能够很好地解决数值振荡问题；
The results show that the simulation results fit the theoretic results(by separate variable method)very well when the heat capacity matrix is lumped with appropriate time step.
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