transverse
adjective mathematics specialized uk/trænzˈvɜːs/ us/trænsˈvɝːs/
横的，横向的;横切的;横断的
in a position or direction that is at an angle of 90° to something else
The main roof beams are given extra support by the smaller transverse beams. 较小的横梁给屋顶的主梁额外的支撑力。