continuous welded rail造句

例句与造句

1. This article establishes a suitable mechanical model for urban mass transit continuous welded rails longitudinal force research , which is widely based on the real situation and draws up the nonlinear finite element method program , and is verified by practical examples
   摘要?了对城市轨道交通无缝线路纵向力进行研究，根据实际结构建立了力学模型，编制了非线性有限元程序，并通过实例进行验证。
2. It's difficult to find continuous welded rail in a sentence. 用continuous welded rail造句挺难的