For studying characteristics of urban vehicular pollution so as to suggest the optimal control target for policy making, a mathematical optimizing model was developed.
为研究城市机动车污染特征，实现污染物排放的最优控制，提出研究排放控制目标的数学优化模型。
The results showed that the optimal policy could be exchanged among these time phases. The optimal model provided decision-making basis for the joint system.
结果表明，不同的时间段之间的最优决策可以相互转换，它为混合系统的库存控制提供了决策依据。
The results showed that the optimal policy could be exchanged among these time phases. The optimal model provided decision-making basis for the joint system.
结果表明，不同的时间段之间的最优决策可以相互转换，它为混合系统的库存控制提供了决策依据。
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