Removable windshield and roof system for your bicycle.
自行车专用可拆卸挡风玻璃和车顶。
The roof was supported by a comparatively traditional post-and-beam system.
建筑屋顶由相对传统的后梁系统支撑。
The steel roof structure system of National Indoor Stadium is bidirectional truss string structure.
国家体育馆屋盖结构为双向张弦网格结构体系。
The steel roof structure system of National Indoor Stadium is bidirectional truss string structure.
国家体育馆屋盖结构为双向张弦网格结构体系。
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