许多化工过程的精确动态分析计算是一个大规模的刚性常微分方程组的求解问题。

The accurate dynamic analysis of a lot of chemical processes is a large scale problem of solving an array of combined stiff ordinary differential equations.

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它是一组典型的刚性常微分方程组，用一般方法求解时只能选用很小的时间步长。

This is a set of typical stiff ordinary differential equations, very small time step could only be adopted when solving the set of equations with common methods.

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