在一端封闭、一端开口的火焰传播管中均匀布置障碍物，研究了障碍物结构对管道中预混火焰传播的影响。
The influence of the configuration of obstacles on premixed flame acceleration in a tube has been studied in this paper.
弹性波在含有孔洞、裂纹或界面等障碍物的结构中传播时，会在它们附近发生散射，导致散射体附近产生动应力集中。
When elastic waves propagate in structures with obstacles such as cutouts, cracks or interfaces and so on, wave scattering and dynamic stress concentration can occur near these scatterers.
基本上仅有四种结构能够用作在水流或障碍物上架桥：钢梁、悬臂结构、拱结构和悬索体系。
Basically there are just four types of structures that can be used to bridge a stream or other obstacle: rigid beams, cantilevers, arches, and suspension systems.
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