求翻译：文章首先分别以公共物品经典定义的二元标准即非排他性和非竞争性、“外部性”概念、“拥挤”效应等理论，和消费者剩余等理论对博物馆免费开放的性质和效益进行了分析是什么意思？

The article first binary standard for the classic definition of public goods, non-exclusive and non-competitive theory on the nature and effectiveness of the museum is open free to the concept of "external", "crowding effect" theory, and consumer surplus analysis

first article in classic definition of the public goods criteria, which are $2 non-exclusive and non-competitive, and the "external" concept, the "crowded" effect theories such as consumers' surplus, and theories such as the museum open to the public free of the nature and benefits to the analysis

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Article first of all a classic definition of public goods of each binary standard that is non-exclusive and non-competitive, "external" concepts, "crowding" effect theory, and consumer surplus theory on the nature of the Museum is open free and benefit analysis

Article first respectively by public goods classics definition dual standard namely non-exclusiveness and non-competitiveness, “exterior nature” concept, “crowded” theories and so on effect, with consumer surplus and so on the theories has carried on the analysis to the museum free opening nature an