The economic benefit evaluation is one of the important contents of the industrial structure and policy research.
经济效益综合评价是产业结构和产业政策研究的重要内容。
At present the study on the aerospace industry is still confined to the qualitative analysis, and the quantify method has not been used to analyze the industrial structure and benefit.
目前关于航天产业的研究尚局限于定性的分析，尚未采用量化的方法系统、完整的研究航天产业的综合效益及成本等问题。
At present the study on the aerospace industry is still confined to the qualitative analysis, and the quantify method has not been used to analyze the industrial structure and benefit.
目前关于航天产业的研究尚局限于定性的分析，尚未采用量化的方法系统、完整的研究航天产业的综合效益及成本等问题。
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