Launch circulation economic research and practice, construct the circulation system of economics and society.

开展循环经济研究和实践，构建循环经济社会系统。

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This essay puts forword a target system of package economic appraising based upon a study of the function of the package in the whole process of good production, circulation and consumption.

在对包装在生产，流通、消费全过程中的作用进行全面系统分析的基础上，提出了包装经济评价的指标体系。

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Calculates the energy consumption and economic index of the full fresh air system and partial circulation air conditioning system.

计算了全新风系统和部分循环风系统的能耗和经济指标。

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Calculates the energy consumption and economic index of the full fresh air system and partial circulation air conditioning system.

计算了全新风系统和部分循环风系统的能耗和经济指标。

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