industrial benefit evaluation 基本例句 效益评价 To analyze the benefit quantitatively, this paper establishes the benefit appraisal index system of the fuel proportion adjustment and provides the weight of every index.摘要为了定量评价油田企业燃料结构调整的效益，构建燃料结构调整效益评价的指标体系，并求出各指标的权重。