longitudinal polarized beam 纵向极化束 longitudinal floor beam 地板纵梁 Linearly polarized longitudinal suspension beam 转向架纵向悬梁 ..
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Visual observations showed that a horizontal displacement in the longitudinal direction of the bridge developed between the tie girder and the top flange of the floor beam at the end connection.
肉眼观察表明：在端节点处的系梁和横梁上翼缘之间产生一种沿桥梁纵向的水平位移。
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