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1·Progressive degree of progressive tax rate depends on the type of Social welfare function and labour supply elasticity.

累进税率的累进程度取决于社会福利函数的类型和劳动供给弹性的大小。

2·With the rise of Arrow's impossibility theorem research in social welfare function in the West enters a stage of perplexity.

由于阿罗不可能性定理的提出，西方社会福利函数理论的研究进入了困惑时期；

3·If we expand the function of social public welfare organization, we can protect the consumer's lawful right.

扩大社会公益团体的功能，可以更好地保护消费者的合法权益。

4·The land can be capitalized only when the urbanization has been sped up and the system of social insurance for the rural population has been established to replace the welfare function of the land.

实现土地资本化的前提条件是积极推进农村城市化，建立现有农村福利制度替代机制，逐步建立覆盖农村的社会保障体系。

5·As a core business of modern public library services, library lecture not only plays a social function but also forcefully highlights the public welfare of culture.

图书馆讲座作为现代公共图书馆服务的一项核心业务，不但发挥了图书馆的社会教育功能，而且有力地彰显了图书馆的文化公益性。

6·Their basic purposes are delivering public or near-public goods, which has a positive function to social welfare or production redistribution.

它的基本用途是提供福利性的公共物品或准公共物品。