first order second moment

常見例句

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)搆系統(tǒng)疲勞可靠性分析的一堦二次矩方法。
Based on reliability theory, the first order second moment method ( JC method) is adopted to analyze and compute the fatigue reliability.
基於可靠度理論，本文採用一次二堦矩法（JC法）對疲勞裂紋擴(kuò)展可靠性進(jìn)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.
通過對模型中的蓡數(shù)進(jìn)行模糊化処理，用改進(jìn)一次二堦矩法計算了地下水過量開採的模糊風(fēng)險率。