Grey relativity analysis is a theoretical method of grey system theory. 灰色關聯度分析是灰色系統理論的一種理論方法。
By calculating the grey associative degree, the different disastrous conditions of natural disaster are compared and analyzed. 用計算自然災害不同災情的灰色關聯度的方法,來對不同災情進行比較分析。