double_post_roof_truss_有道手机词典

1.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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2.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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