Because roof edge is different from step edge, their detection methods are different.

由于屋脊边缘的特点不同于阶跃边缘，他们的检测方法也不同。

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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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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。

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When Ocean comes in again, he is on the roof, moving toward the edge, and jokes about jumping.

NEWYORKER: Sea Change

He makes his way to the edge of the roof.

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Second-half substitute Shane Duggan fired the ball into the roof of the net from the edge of the box on 51 minutes.

BBC: Derry City 1-1 Cork City