桥梁的内外侧轮廓线应顺滑清晰，无突变、明显折变或反复现象。
耐压圆柱壳结构发生失稳时，壳体结构因为材料达到屈曲极限而发生了塑性屈曲变形。
1·Producing little stretch distortion and having no flection under permitted air speed and pressure are the criterions of assessing air conduit capacity based on its bearing load.
基于风管所承受的各种荷载来评定其工作能力，通常在允许的气流速度（或压力）下，是否只产生较小的弹性变形，而不产生屈曲。
2·Introducing the basic method for analyzing the structure flection load by finite units and giving a computer program.
介绍了有限元分析结构屈曲荷载的基本方法，并编制了程序。
3·In order to research the buckling process of three-dimensional trusses, the eigenvalue buckling analysis and non-linear flection analysis are carried out.
对立体桁架进行了特征值屈曲分析和非线性屈曲分析，研究其屈曲过程。
4·The research method can also be applied to the jumping flection problem of other elastomer.
该研究理论也可用于其他弹性体跳跃屈曲问题。
5·Structure calculation: include the static, dynamical and flection stabilization computation of bridge 's superstructure and the substructure.
结构计算：含桥梁上下部结构的静力、动力及屈曲稳定计算。
1·Their aring original is to perpendicularly fly, at this time fly of orbit already gradual to ground flection.
他们本来是垂直地飞着，这时飞行的轨道已经逐渐向地面弯曲。
2·This product USES for primarily every kind of metals, nonmetal material proceeds to pull to stretch, compress, flection and shear to slice etc. experiment.
本产品主要用于各种金属、非金属材料进行拉伸、压缩、弯曲及剪切等试验。