安装顺序，立杆沿桥纵向由一端向另一端，水平杆由下向上进行。
The installed order is done along the longitudinal direction of bridge to the vertical bars and to the horizontal bars from below to top.
安装顺序，立杆沿桥纵向由一端向另一端，水平杆由下向上进行。
The installed order is done along the longitudinal direction of bridge to the vertical bars and to the horizontal bars from below to top.
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