variable cross section造句

Beam of variable cross section
变截面梁
An analysis of post - buckling of extensible rods with variable cross sections and clamped - simply supported ends
可伸长变截面杆的弹性过屈曲模型及其数值解
In this paper , the method combined with curvature mode shape , finite element method ( fem ) , artificial neural networks ( ann ) and genetic algorithms ( ga ) is applied . the optimization of a taper trunk beam of variable cross section under impact load can be obtained on the base of considering the objectives of minimum gross mass and the condition of constrain of dynamic stress
本文采用了曲率模态、有限元、神经网络和遗传算法相互结合的方法，对承受冲击载荷作用的变截面悬臂箱型梁，在动应力满足材料许用应力的约束下，以质量最小为目标函数，做了优化设计方面的研究。
It's difficult to find variable cross section in a sentence. 用variable cross section造句挺难的