Performance optimization must be guided by concrete evidence.
性能优化必须以具体证据为依据。
Through the sorting of the contribution rates of the fuel consumption at simplified engine operation points, the optimization with preference in the early stage of engine development can be guided.
通过发动机工况简化点油耗贡献率的排序，可指导发动机早期开发阶段中有侧重的优化。
Guided by complex adaptive system theory, this thesis discussed the modeling and optimization problems of supply chain. The main contents can be stated as follows.
本文以复杂适应系统理论为指导，对供应链系统的建模与优化问题进行了探讨，主要内容如下。
A new guided sieve trays with high efficiency has been developed based on the improvement and optimization of the structure of high efficiency guided sieve tray.
对高效导向筛板的结构进行改进和优化，开发出新型高效导向筛板。
A new guided sieve trays with high efficiency has been developed based on the improvement and optimization of the structure of high efficiency guided sieve tray.
对高效导向筛板的结构进行改进和优化，开发出新型高效导向筛板。
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