1、[建]双柱桁架
...queen post tru 双柱桁架queen post truss 双竖杆桁架; 双柱屋架; 双柱桁架queen-post girder 双柱梁; 双柱托梁 ...
2、双柱屋架
...queen post tru 双柱桁架queen post truss 双竖杆桁架; 双柱屋架; 双柱桁架queen-post girder 双柱梁; 双柱托梁 ...
3、双柱桁架
...双柱架 queen post双柱桁架 queen post truss双柱龙门刨床 double column planer ...
queen-post truss双柱桁架
inverted queen post truss倒双柱桁架
queen post roof truss[建] 双柱屋;双柱屋架
king and queen post truss立字桁架
inverted impulse queen post truss倒双柱桁架