在链反应或其它连续反应中，由于自由基等中间产物极活泼，浓度低，寿命又短，可以近似地认为在反应达到稳定状态后，它们的浓度基本上不随时间而变化，即d[M]/dt = 0 (M 表示中间产物),这样的处理方法叫做稳态近似法（steady state approximation）。
讨论了稳态近似法和速控法在处理复杂反应机理中的应用。
The application of steady state approximation and rate controlling step methods in the process of complicated reaction mechanism were studied.
如果我们对图解用稳态近似法去处理，则推导出的方程比较复杂。
If we use the steady state approximation to treat this scheme, the equations derived are more complex.
稳态近似法的重要性是，它大大简化了在复杂的连串反应途径中速度方程的求解。
The importance of the steady state approximation is that it greatly simplifies the solution of the rate equations in complex consecutive reaction pathways.
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