The paper assess the soil environment quality of agro-land of mine with modified gray cluster analysis.

Ecological environment quality comprehensive evaluation model based on grey clustering;

The Application of Grey Clustering in Submerged Layer Logging Interpretation;

Application of grey clustering method for water environmental quality assessment in Fuyang River;

Optimal design of main transmission system of machine tool based on the grey classification;

Optimal Design of Driller' Gear Box Based on the Method of Grey Classification;

Then,the main transmission system of machine tool is regarded as grey system,several reasonable schemes mentioned above can be put in order according to satisfaction with grey classification,which is concluded in grey system theory.

Power transformer fault diagnosis based on improved gray clustering analysis;

The gray clustering method of gray system theory is introduced in this article.

This paper discusses the application of gray clustering method used on water quality evaluation by taking the Heyuan section of the Dongjiang River as an example.