本文提出利用列表和在表上逐步进行修改，最终得到工期成本优化问题的最优解的方法。

This paper introduce the optimal solution to the problem of optimizing time and cost by setting up a tableau and modifying the tableau step by step.

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如何逐步建立一个东亚货币区，并使这个货币区达到最优化，这是一个更复杂的需要不断摸索、循序渐进的课题。

How gradually establishes an East Asian monetary area, and enables it to achieve the optimization, is more complex task needing unceasingly trying to find out and proceeding step by step.

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将该启发式方法与逐步动态优化法相结合进行机组最优组合，使计算时间大为减少，同时可保证得到最优解。

Computing time is greatly decreased and the global optimal solution is gained by using hybrid heuristic progressive optimality approach to unit commitment.

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