Transferable emission permit — a pollution control policy requiring each emitter of a pollutant to possess permits for the amount of pollution it releases.

可转让许可系统——污染物控制政策要求每个污染排放源拥有污染排放许可。

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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。

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This paper for control invalid problem and its reason is specific aim deep layer anatomy, and have land put forward administer in the future efficiently Huai the policy suggestion of river pollution.

本文对这一问题及其原因进行较为深入地剖析，并有针对性地提出今后有效治理淮河污染的政策建议。

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