Third, analyzing the relationship between land price and gradefactors.
第三,分析地价与定级因子间的关系。
2
The flood risk assessment grading systems composed of 4 first-gradefactors and 14 second-gradefactors are established based on Delphi method.
采用特尔菲法,选择4个一级因子和14个二级因子,建立洪灾风险评价等级指标体系。
3
Therefore, the gradefactors diffusion calculates the effect value of the grade units affected by the gradefactors and it is the key to the land grading.