The first step was to establish economic evaluation model.
首先，建立经济评价模型。
A technical and economic evaluation model was established on the reservoir adaptability of polymer flooding technology.
建立起聚合物驱油技术的油藏适应性经济评价模型。
The fifth chapter introduces the economic evaluation model based on circling modification and the empirical research of 14 provincial administrative regions.
第五章基于循环修正思路的经济评价模型及对省级行政区的实证研究。
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