Based on the technical parameters for the performance of engines, the economical index of engines is predicted and analyzed by the theory of fuzzy linear regression.

由发动机性能的设计技术参数，运用模糊线性回归理论建立了发动机经济性指标的模糊预测模型，并对其经济性指标进行预测和分析。

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Adoption of different fuel addition process results in different mixed material balling, fuel distribution, firing process parameters and technical and economical indexes.

采用不同的燃料配加工艺，其混料造球、燃料分布及烧结过程参数等均会不同，最终获得的技术经济指标也有所差异。

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Adoption of different fuel addition process results in different mixed material balling, fuel distribution, firing process parameters and technical and economical indexes.

采用不同的燃料配加工艺，其混料造球、燃料分布及烧结过程参数等均会不同，最终获得的技术经济指标也有所差异。

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