and forecast the development of industrial circular economy by using the gm (1.1) grey forecasting model in the next 5 years.
运用gm(1.1)灰色预测模型对永兴县工业循环经济未来5年的发展情况进行预测。
to evaluate the three developing levels of coking industry in xiaoyi by principal component analysis methods according to the industrial circular economy evaluation index system.