NMR and MRI are the common methods to extensively identify the adulteration in food authentication.It can achieve the co......

利用主元素PCA分析法从众多影响修整结果的参数中分析出主要工艺参数,并通过试验验证其准确性和各参数对砂轮修整结果影响规律.PCA......

Monitoring air pollution is related to the life quality and health of the people.In this study,we present concentrations......

Nitrogen pollution in the groundwater has become an environmental problem of interest to the people,especially in some d......