grading of river meaning in English

河流均衡作用

Abstract : the categorization and grading of river port shorelines presented in this article is based upon the quantified analysis acciording to the method of multi - objective decision making on divisions of river shorelines . jafter obtaining a synthetic degree of satisfaction with each division of river shorelines , then fuzzy cluster analysis is applied for the categorization and grading of the divisions of river shorelines in an effort to make an evaluation of the qualities and functions of river shorelines based on quantified categorization and grading
文摘:文中提出的港口岸线分类定级方法,是按多目标决策方法对分段岸线进行定量化分析,得出每段岸线的综合满意度,然后利用模糊聚类的方法对岸线进行分类定级,以便在定量化分类定级的基础上进行岸线性质和功能评价