1. 拱形屋顶：arched retaining wall 拱形挡土墙 | arched roof 拱形屋顶 | arched spillway 弧形溢吝
2. 拱形屋：arched retaining wall 拱形挡土墙 | arched roof 拱形屋Ding! | arched spillway 弧形溢吝
3. 拱形炉顶,拱形屋顶：arched rail set ==> 钢轨拱形支架 | arched roof ==> 拱形炉顶,拱形屋顶 | arched roof truss ==> 拱形屋架
1. Two of the four sides of the wooden palace's arched roof are sinking, while the glazed tiles and supporting pillars also need urgent attention.
2. The service center's arched roof captures as much sun radiation as possible.