本文在介绍了传统的一些定价方法(如：成本分析法、影子价格法等方法)后，对其特点进行分析。
The paper first introduces some traditional pricing methods such as cost analysis method, shadow price method and so on, and then the paper analyzes the characteristics of each pricing method.
然而在阻塞费用对阻塞线路的分摊中，目前提出的影子价格法和边际微增法仍存在一些不合理的地方。
Unfortunately in the congestion cost allocation to congested lines, the shadow price method and the marginal and incremental method existed have some defects.
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