The parameters of the model are fuzzily processed and the fuzzy risk can be evaluated by using the modified first order second moment method. 通過(guò)對模型中的參數進(jìn)行模糊化處理，用改進(jìn)一次二階矩法計算了地下水過(guò)量開(kāi)采的模糊風(fēng)險率。
The distribution parameters have been estimated with either the maximum likelihood method or a modified moment method. 對其中的參數分別用極大似然法和改進(jìn)的矩法進(jìn)行了估計。
