... queen post truss 双柱桁架 queen post 双柱架 query random blockwork 乱砌块砌筑体 ...
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短语
双柱桁架
[建]
queen post truss
双柱车刀架
double post tool rest
双柱式屋架
double post roof truss
倒双柱桁架
inverted queen post truss
双柱桁架梁
[建]
double-strut trussed beam
双柱锤机架
double standard hammer frame
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