The influences of the load combination ratio, rise-span ratio, sag-span ratio and resistant variable variance on the reliable performance are discussed.
分析了荷载比例、矢跨比、垂跨比和抗力类变量的变异系数对结构可靠性能的影响。
2
The paper realizes the optimization combination of uncertainties by using minimum linear variancecombination.
通过采用最小线性方差组合，实现了三种费用估算方法随机不确定性的优化综合。
3
And the variance of fatty acid content of the DH lines derived from a cross combination of parents with the same fatty acid contents was the most remarkable.