构架 横梁的中间段在工地用螺栓连接。
The cross girder center segments of the bents were field bolted.
经过多次试验，我们解决了独特长度的螺纹杆，通过椅子上的小切口用螺栓连接在一起。
After many tests, we settled on threaded rods of unique lengths that were connected by bolts through small incisions (ear-piercings) in the chair.
对这种桥架的安装，应首先在安装工地选好地段，把几段桥架用预装螺栓连接成一个整体。
On the bridge installation, should first of all in the site location, the bridge sections are connected into a whole with preloaded bolt.
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