常見例句雙語例句A first order second moment formulation for systems fatigue reliability assessment of offshore structures is presented.本文提出了海洋平臺結(jié)構(gòu)系統(tǒng)疲勞可靠性分析的一階二次矩方法。Based on reliability theory, the first order second moment method ( JC method) is adopted to analyze and compute the fatigue reliability.基于可靠度理論，本文采用一次二階矩法（JC法）對疲勞裂紋擴展可靠性進行計算。The parameters of the model are fuzzily processed and the fuzzy risk can be evaluated by using the modified first order second moment method.通過對模型中的參數(shù)進行模糊化處理，用改進一次二階矩法計算了地下水過量開采的模糊風險率。 返回 first order second moment