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。
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。
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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