The overlapping design of the installed shingles provides a double layer of protection as the water flows down the roof slope to the roof edge.
沥青瓦安装的叠层设计在水从屋顶坡面流到屋檐的过程中提供了双重保护层。
Moreover, the cantilever height of roof edge was artificially lowered to investigate its effect on the mean wind loads.
此外，通过降低悬挑部分的高度以研究几何参数变化对平均风荷载的影响。
Moreover, the cantilever height of roof edge was artificially lowered to investigate its effect on the mean wind loads.
此外，通过降低悬挑部分的高度以研究几何参数变化对平均风荷载的影响。
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