There may be a singularity in the solution. If the model is correct, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances).
可能在求解的过程中出现奇异，你可以试着把仿真步长降低，再试试。
There may be a singularity in the solution. If the model is correct, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances).
可能在求解的过程中出现奇异，你可以试着把仿真步长降低，再试试。
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