The probability fatigue life - span of pressure vessel under the action of different cycle load is closely related to the cycle load with high stress.
承受不同循环载荷共同作用的压力容器，其概率疲劳寿命和在高应力水平上的循环载荷有着密切的关系。
2
Its role is to support a bridge structure, reaction forces transfer to the pier, and to ensure that the bridge span structure underload to meet the design requirements of the deformation.
它的作用是将桥跨结构的支承反力传递给墩台，并保证桥跨结构在荷载作用下能满足设计要求的变形。
3
Due to the large span of the floor slab, the moment torsion of the beam, under the vertical load, is obvious.