Based on the grey system theory, a grey assessment model of groundwater quality is built by combining the method of grey relational grade analysis and the method of singlefactor contaminant index.
Through improving the singlefactor or multifactor to influence the harmony degree to probe which can influence the harmony degree in theory.
通过在理论上对各构成要素的敏感性分析,表明单因素或多因素的改进对和谐度是有影响的。
3
The new criterion includes the integral features of the whole field, while the theory of minimum strain-energy-density factor considers only a single point in the crack tip field.