其二是用软件模拟组合逻辑。

And the second is to simulate combinatorial logic with software.

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但是如果对元素进行了适当地嵌套，则有时可以模拟组合索引。

However, you can sometimes mimic a composite index if your elements are appropriately nested.

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最后，应用具体实例模拟组合流程的分析过程，展示了该方法的有效性。

Finally, a specific example is utilized to simulate the analysis procedure of service processes, which shows the effective of the proposed method.

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