变量正态化
Standardization of normal variables
并流下行快速流态化
cocurrent downflow circulating fluidized bed
产业生态化
industrial ecology
industrial ecologization
Transformation of industrial ecology
eco-Industrial
城市生态化
Urban ecology
urban ecologization
City ecological development
次数函数常态化
normalization of frequency function
大众旅游的生态化
ecology of the mass tourism