Fig. 12 illustrates a timber double post roof truss.

图12所示为一个双柱木屋顶桁架。

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FIG. 12 illustrates a timber double post roof truss. This type of truss is constructed where a wider span or a less restricted roof space is required.

图12所示为一个双柱木屋顶桁架。这种桁架主要建于跨度要求较大或屋顶空间限制较少的地方。

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