a railroad bridge的意思|示意

The beams have been used on a test railroad bridge in Colorado and several road bridges in Illinois and New Jersey.

这种梁已经用在科罗拉多州的一座试验铁路桥，以及伊利诺斯州和新泽西州的多座公路桥上。

Hitting the homestretch in fall: on a former railroad bridge in the Great Allegheny Passage in Pennsylvania.

在秋天里返家的最后旅途上冲刺：在之前宾夕法尼亚州阿勒格尼大公路的铁道桥上。

A simple method to predict earthquake damage to railroad bridge is proposed.

提出了一种简单的预测铁路桥梁地震震害的方法。

Only a picket post half a mile out, on the railroad, and a single sentinel at this end of the bridge.

只在半英里以外有一个警戒哨，位于铁道线上，桥的这一端有一名哨兵把守。

The structural appraisement of a used grade separation railroad bridge is studied in this paper as a important reference in order to confirm the reuse of grade separation railroad bridge.

通过对某地道桥的结构鉴定，为该地道桥的可否再利用提供依据。