国民经济效益是指国民经济的总体效益，即在一定时期内整个国民经济活动中总投入与总产出的对比关系。一般也将国民经济效益称宏观经济效益。
铁路货运产出物影子价格是分析研究铁路建设项目国民经济效益的一个重要参数。
One of the important parameters for the benefit analysis on railway construction projects in national economy system is the Shadow Prices of the Products from railway goods transportation (SPPR).
内容包括渔业生产直接消耗系数，价值构成，国民经济效益分析，各种养殖类型的经济指标比较等。
It consists of direct consumptive coefficient of fishery production, construct of value, analysis of the national economic results and a comparison of the economic targets of various types of culture.
本文的不足之处在于对案例的分析过于粗略，且对国民经济效益的定量分析不够，需要进一步的完善。
But it has to point out that the quantitative analysis of the national economy benefits are inadequate, and the analysis about the case is too simple, which need further consummate.
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