Statistical analysis for cross-sectional area ratios of chord and web members commonly used in steel roof trusses are also provided for reference in predictng fundamental calculation parameters.
对常用钢屋架的弦杆腹杆截面积比值作了统计分析，以便设计者能更准确地确定计算原始参数。
Steel and glass balconies provide seating areas below gothic-style wooden roof trusses, while a series of glass Bridges create links between previously hard-to-reach rooms.
在哥特式屋顶桁架下的钢和玻璃阳台提供座位区域，而一系列玻璃桥之间与以前难以到达的房间建立联系。
Structurally, the roof form consists of simple "a" frame trusses inverted to form a flat roof, each truss individually supported by a steel column.
在结构上，屋顶形状由简单的“A”形框桁架结构组成，框桁架倒置形成平屋顶，每个桁架分别由一根钢柱支撑。
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