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。

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Thanks to ESO's Wide Field Imager camera, bolted onto a 2.2-m (7.2 ft) scope at La Silla, in the high desert of northern Chile, we don't have to guess anymore.

感谢ESO那台地处智利北部沙漠高点、装在拉西拉天文台2.2米口径望远镜上的宽幅成像相机吧，我们终于不用再胡乱猜测了。

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All field splices were bolted using ASTM A325 hex head bolts.

所有现场拼接都用美国材料试验协会的A325六角形头螺栓。

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