cross rail

• 横导轨,横梁,横构件

cross rail的用法和样例：

例句

1. The beam was screwed down to the cross bar.
   横梁已用螺丝柠在垮木上。
2. The cross girder center segments of the bents were field bolted.
   构架横梁的中间段在工地用螺栓连接。