穹隆; 拱形炉顶，拱形屋顶
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. arched roof
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.
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2. The service center's arched roof captures as much sun radiation as possible.